{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"本文介绍了钎焊及钛基钎焊料的发展及其应用.对钎焊的特点及钎焊料应具备的性能进行了较为全面的论述.对不同状态钎焊料的性能特点进行了全面的比较,特别是对在航天、航空领域广泛应用的非晶钛基钎焊料进行了重点介绍.","authors":[{"authorName":"祁焱","id":"73fa14b9-e38d-4b02-adab-58568f48bd93","originalAuthorName":"祁焱"},{"authorName":"张羊换","id":"523e377c-2c5c-48da-97aa-9a738c866f42","originalAuthorName":"张羊换"},{"authorName":"全白云","id":"49112c3f-4a60-4f7e-ae10-8ebbf3daa276","originalAuthorName":"全白云"},{"authorName":"孙桂琴","id":"98c3e200-d367-4325-bff6-edf2b672cb53","originalAuthorName":"孙桂琴"},{"authorName":"王新林","id":"f7ac1da7-741a-44a1-82c0-b793ef5d5529","originalAuthorName":"王新林"}],"doi":"10.3969/j.issn.1005-8192.2003.05.008","fpage":"31","id":"8e0cda3d-7ef3-4aa6-9d1a-5c6996bb22c2","issue":"5","journal":{"abbrevTitle":"JSGNCL","coverImgSrc":"journal/img/cover/JSGNCL.jpg","id":"46","issnPpub":"1005-8192","publisherId":"JSGNCL","title":"金属功能材料"},"keywords":[{"id":"0bbfd8c4-90c5-46e3-9c42-59fcd00a23e7","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"f48a148a-cca5-406d-a401-4bc87f69ea4b","keyword":"钛基钎焊料","originalKeyword":"钛基钎焊料"},{"id":"d9bccbd0-0ac2-47e8-a7a7-21c6bd385081","keyword":"应用及发展","originalKeyword":"应用及发展"}],"language":"zh","publisherId":"jsgncl200305008","title":"钎焊及钛基钎焊料的发展及应用","volume":"10","year":"2003"},{"abstractinfo":"对不锈钢及其板翅式换热器钎焊技术研究现状作简介,内容包括不锈钢软钎焊、硬钎焊的连接材料选择,不锈钢与陶瓷、钛、铝等异质材料的钎焊技术.阐述了新工艺方法的应用,包括钎焊-热处理一体化、PTLP(partial transient liquid phase)技术、加压钎焊、真空电弧钎焊、大间隙钎焊、真空电子束钎焊、辉光放电钎焊等.最后简要说明了计算机模拟技术在不锈钢钎焊中的应用,介绍了不锈钢板翅式换热器的钎焊现状和待解决的主要问题.","authors":[{"authorName":"张洪涛","id":"acba3f22-5b64-4bd8-abe3-10bdaae1c77c","originalAuthorName":"张洪涛"},{"authorName":"陈怀宁","id":"9f9aa970-1ddc-4356-8a6e-7a3ff2f351db","originalAuthorName":"陈怀宁"},{"authorName":"吴昌忠","id":"0a3d02af-2773-4c04-b81e-589d823d55f7","originalAuthorName":"吴昌忠"},{"authorName":"林泉洪","id":"42a63aa0-256b-41f8-a241-72df6dc6bf09","originalAuthorName":"林泉洪"}],"doi":"10.3969/j.issn.1007-2330.2005.04.003","fpage":"12","id":"88a042d0-65ce-4fcd-8104-1d09d5e1c4a0","issue":"4","journal":{"abbrevTitle":"YHCLGY","coverImgSrc":"journal/img/cover/YHCLGY.jpg","id":"77","issnPpub":"1007-2330","publisherId":"YHCLGY","title":"宇航材料工艺 "},"keywords":[{"id":"3ac169e4-fa4d-4693-92c8-e31faaae9d38","keyword":"不锈钢","originalKeyword":"不锈钢"},{"id":"13d6df44-6d48-492c-bcc2-2c65b45eb1b2","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"7d74ea40-7aeb-4f8c-8976-a0b792afd72a","keyword":"钎料","originalKeyword":"钎料"},{"id":"4998070c-2313-4c13-9153-b01fad03dcbd","keyword":"钎焊工艺","originalKeyword":"钎焊工艺"},{"id":"0a0027f3-4321-4de1-962e-2726b832632a","keyword":"计算机模拟","originalKeyword":"计算机模拟"},{"id":"e3ab8499-0b84-42fb-9f5e-e28add3674f4","keyword":"板翅式换热器","originalKeyword":"板翅式换热器"}],"language":"zh","publisherId":"yhclgy200504003","title":"不锈钢及其板翅式换热器钎焊技术","volume":"35","year":"2005"},{"abstractinfo":"对不同钎焊温度下的WC\"金属布\"钎焊耐磨层进行磨损测试,并通过扫描电镜、光学显微镜对其微观组织进行分析.研究表明:过低的钎焊温度不利于钎料向WC颗粒扩散,过高的钎焊温度容易在WC与NiCrBSi钎料界面处生成脆性的Cr7C3相,这些都导致耐磨层的耐磨性下降.","authors":[{"authorName":"谭兵","id":"ad8f28de-e519-4dba-bce2-b67fe0d16438","originalAuthorName":"谭兵"},{"authorName":"赵宝荣","id":"4f3fca06-e3d4-4eb5-a7d6-91ee14f8c8e0","originalAuthorName":"赵宝荣"},{"authorName":"樊建勋","id":"2f33df1c-2b3d-4337-83da-4495a11d8e90","originalAuthorName":"樊建勋"},{"authorName":"高平","id":"e2df6b80-8511-4ba3-8e32-5e087888b836","originalAuthorName":"高平"}],"doi":"10.3969/j.issn.1004-244X.2003.01.005","fpage":"19","id":"2fdecb79-feae-49e4-8242-529a5e6cec77","issue":"1","journal":{"abbrevTitle":"BQCLKXYGC","coverImgSrc":"journal/img/cover/BQCLKXYGC.jpg","id":"4","issnPpub":"1004-244X","publisherId":"BQCLKXYGC","title":"兵器材料科学与工程 "},"keywords":[{"id":"07f78f5e-aa07-43c7-b559-c19d37619b3a","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"3b6187a2-05f6-40e9-9249-99c09da30cad","keyword":"WC","originalKeyword":"WC"},{"id":"5ff91341-e203-4759-96c4-d7c943a9cc5d","keyword":"NiCrBSi钎料","originalKeyword":"NiCrBSi钎料"},{"id":"d7fa5ddf-8cde-4640-9650-cbd9e1eddd94","keyword":"耐磨性","originalKeyword":"耐磨性"}],"language":"zh","publisherId":"bqclkxygc200301005","title":"钎焊温度对WC\"金属布\"钎焊耐磨层性能研究","volume":"26","year":"2003"},{"abstractinfo":"采用高频感应钎焊的方法,研究了Ag及AgCu28钎料对钛丝钎焊性能的影响.当钎焊保温时间大于1.0 s时,BAg与BAgCu28钎缝的抗拉强度分别达到了550 N与160 N.钎缝的金相及X射线衍射分析表明,钎缝中不存在Ti-Ag及Ti-Cu金属间化合物,快速感应钎焊过程可以抑制钎料组元和母材之间的化学反应及母材晶粒的长大,即使采用熔点较高的钎料,也可以获得高性能的钎焊接头.","authors":[{"authorName":"杨永福","id":"4afa57d5-b27f-48b2-a8b9-ec7f236e1b07","originalAuthorName":"杨永福"},{"authorName":"艾建玲","id":"148801c0-4ced-4cd1-abdf-f706702269da","originalAuthorName":"艾建玲"}],"doi":"10.3321/j.issn:0412-1961.2002.z1.130","fpage":"417","id":"121d1447-5774-49a2-9893-ec848f7835fe","issue":"z1","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"17888b24-471c-401e-8f96-05c70ed9feee","keyword":"Ti","originalKeyword":"Ti"},{"id":"a9f23f1f-5c3a-4a72-9ba6-f08b90b013c3","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"1f913267-4502-46ad-9308-4f3d3100faa2","keyword":"钎料","originalKeyword":"钎料"}],"language":"zh","publisherId":"jsxb2002z1130","title":"钛丝的钎焊对接","volume":"38","year":"2002"},{"abstractinfo":"介绍了铝-钛合金复合结构的优点和应用前景,分析了铝-钛异种金属之间焊接的难点及存在的主要问题,总结了关于铝-钛异种金属真空钎焊、高频感应钎焊、熔钎焊以及搅拌摩擦钎焊技术的研究现状,并讨论了各种焊接技术的主要特征。","authors":[{"authorName":"赵宏禹","id":"e6fedf70-11e5-4dc0-ae88-76bdbfad2bca","originalAuthorName":"赵宏禹"},{"authorName":"杨斯楠","id":"5a203f46-e7dd-4ae2-984d-6858a1561166","originalAuthorName":"杨斯楠"},{"authorName":"陈龙源","id":"b1406c38-fa74-4b82-abfb-a7ec0f9af35a","originalAuthorName":"陈龙源"},{"authorName":"潘岳","id":"1e3b0e0e-5254-464d-a5e3-6a5c7b127ca9","originalAuthorName":"潘岳"},{"authorName":"徐荣正","id":"885a6429-71e0-4f48-bad7-2e908e3321de","originalAuthorName":"徐荣正"}],"doi":"10.11896/j.issn.1005-023X.2015.011.013","fpage":"76","id":"8b9cc8ca-7490-43ee-8e24-1cfb42b4be92","issue":"11","journal":{"abbrevTitle":"CLDB","coverImgSrc":"journal/img/cover/CLDB.jpg","id":"8","issnPpub":"1005-023X","publisherId":"CLDB","title":"材料导报"},"keywords":[{"id":"f0e93e92-813e-47bb-a6c6-047d38ac3727","keyword":"铝合金","originalKeyword":"铝合金"},{"id":"b5dc31f1-7839-4ae0-be65-ea2148c9f922","keyword":"钛合金","originalKeyword":"钛合金"},{"id":"724c727b-d2af-455d-a4cd-dca7262de48c","keyword":"异种金属","originalKeyword":"异种金属"},{"id":"bf6bc828-4d98-4d66-9a48-897bbbc45fb2","keyword":"钎焊","originalKeyword":"钎焊"}],"language":"zh","publisherId":"cldb201511013","title":"铝-钛异种金属钎焊技术的研究?","volume":"","year":"2015"},{"abstractinfo":"钎焊法制备WC复合涂层可以克服热喷涂层的许多缺点,但目前对其在中性NaCl介质中的腐蚀行为研究不多.在碳钢表面真空钎焊制备了WC-Ni复合涂层,采用X射线衍射(XRD)分析了WC-Ni复合涂层表面的物相;通过动电位极化曲线考察了其在3%NaCl溶液中的腐蚀电化学行为;通过场发射扫描电镜(FEGSEM)结合EDX能谱仪观察了不同极化电位处理的涂层的表面形貌和化学组成;采用电感耦合等离子体发射光谱分析了不同极化电位下溶解的金属离子浓度.结果表明:钎焊WC-Ni复合涂层主要是由WC,Ni,NiW,Ni2W4C,Cr3NiB6等物相组成,没有W2C等脆性相;阳极极化曲线上出现2个电流密度平台,分别对应Ni,Cr的氧化物膜的形成和W氧化形成WO3膜层,低电位时主要存在Ni的活性溶解,高电位时同时存在Ni,Cr,W等元素的活性溶解;该涂层耐腐蚀性能较好,硬质相WC的脱落减少,耐磨性提高.","authors":[{"authorName":"周腾","id":"1114b402-d625-4553-89d9-3d1c53954657","originalAuthorName":"周腾"},{"authorName":"刘涛","id":"c83579bb-b61f-4fde-a8b4-9add9250c3f7","originalAuthorName":"刘涛"},{"authorName":"高立新","id":"6c2bb4ca-635a-4d10-9b36-2d1d5fc3a4fa","originalAuthorName":"高立新"},{"authorName":"张大全","id":"d7ff0f08-834a-4ff6-a41f-3023e0982550","originalAuthorName":"张大全"}],"doi":"","fpage":"8","id":"82d7832e-f51f-40e0-9db5-840096ac360e","issue":"2","journal":{"abbrevTitle":"CLBH","coverImgSrc":"journal/img/cover/CLBH.jpg","id":"7","issnPpub":"1001-1560","publisherId":"CLBH","title":"材料保护"},"keywords":[{"id":"ec95846c-ea91-4f60-8c3f-a3dc820402c4","keyword":"碳化钨","originalKeyword":"碳化钨"},{"id":"1e40480e-2d86-4737-b4cf-235436e96903","keyword":"Ni基复合涂层","originalKeyword":"Ni基复合涂层"},{"id":"7123cb86-ef6e-4049-96fe-8170182ff40c","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"a132db79-149e-4830-ba0f-ae540a0d6bc2","keyword":"耐腐蚀性能","originalKeyword":"耐腐蚀性能"},{"id":"a525d36b-6442-461d-b6e4-a191cc2b8eca","keyword":"动电位极化曲线","originalKeyword":"动电位极化曲线"},{"id":"62e3bc2d-707e-485c-bc2d-c2454c218250","keyword":"NaCl溶液","originalKeyword":"NaCl溶液"},{"id":"5b8f0494-a3cf-443b-8df9-d44bbbb9e79c","keyword":"碳钢","originalKeyword":"碳钢"}],"language":"zh","publisherId":"clbh201402003","title":"钎焊WC-Ni基复合涂层的耐腐蚀性能","volume":"47","year":"2014"},{"abstractinfo":"钎焊蜂窝铝板面板与蜂窝芯之间为冶金结合,各种性能指标均强于同种规格的胶粘蜂窝铝板.主要研究钎焊蜂窝铝板在有无面板的条件下的平压性能.结果表明,有无面板的钎焊蜂窝铝板的平压性能相差不大;在不降低蜂窝板平压强度的前提下,可以通过减小面板厚度来达到降低蜂窝板密度的目的.","authors":[{"authorName":"彭明军","id":"84478d6e-1eb0-4846-8eaf-9a15f194e079","originalAuthorName":"彭明军"},{"authorName":"孙勇","id":"bcc7aa6a-7b57-451c-8b60-e35f3980f805","originalAuthorName":"孙勇"},{"authorName":"沈黎","id":"88474081-8f27-4cf5-bb90-333f4ee53310","originalAuthorName":"沈黎"},{"authorName":"孟秀凤","id":"0f339bb6-ae7d-4e81-be04-e42a0839d12d","originalAuthorName":"孟秀凤"},{"authorName":"赵磊","id":"0035b696-c485-40c8-b8f7-5110e9e1e448","originalAuthorName":"赵磊"}],"doi":"","fpage":"471","id":"032a738a-445f-46b7-8624-ea16c8582cea","issue":"z2","journal":{"abbrevTitle":"CLDB","coverImgSrc":"journal/img/cover/CLDB.jpg","id":"8","issnPpub":"1005-023X","publisherId":"CLDB","title":"材料导报"},"keywords":[{"id":"634a3e9c-9b54-4770-bcc3-2c45726f5a74","keyword":"面板","originalKeyword":"面板"},{"id":"e5003335-ae89-469b-8050-b8ad67ac0fde","keyword":"铝蜂窝板","originalKeyword":"铝蜂窝板"},{"id":"32752577-c62a-493a-800d-66ecf06f318f","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"1e2bc110-89db-4d5d-ba15-1821e7c1da40","keyword":"平压","originalKeyword":"平压"}],"language":"zh","publisherId":"cldb2006z2138","title":"面板对钎焊蜂窝铝板平压性能的影响","volume":"20","year":"2006"},{"abstractinfo":"采用滚压工艺, 将WC粉或Ni-Cr-B-Si粉与有机连接物的混合物制备成具有良好柔性的金属粉末布. 金属粉末布贴装到零件表面, 经过高温钎焊形成耐磨钎焊涂层. 涂层与基体间具有很强的冶金结合强度, 其拉伸强度σb〉78MPa, 剪切强度σt〉155MPa. 钎焊涂层的耐磨性远高于Co-Cr-W堆焊层.","authors":[{"authorName":"陆善平","id":"be0e59f4-473c-4895-94f2-8d2ae11e873a","originalAuthorName":"陆善平"},{"authorName":"董秀中","id":"74c0557b-fb3a-4648-948f-f871bffc938b","originalAuthorName":"董秀中"},{"authorName":"许先忠","id":"2e018257-f6fb-4b3f-8cb1-2f7a8aefb43e","originalAuthorName":"许先忠"},{"authorName":"吴庆","id":"65c863e0-3a74-4060-a85b-11fd90aab8aa","originalAuthorName":"吴庆"},{"authorName":"郭义","id":"4d126a11-35a6-448e-8a10-b3c1283f945c","originalAuthorName":"郭义"},{"authorName":"朱仲为","id":"443b8a63-c04f-4706-b3c2-fb4db361e5b4","originalAuthorName":"朱仲为"}],"categoryName":"|","doi":"","fpage":"83","id":"b590009c-801f-4c29-9517-8554136bf0f8","issue":"1","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"8e9184af-ff1e-49bb-8978-f2ff375c3f9c","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"d3199d54-b871-45f8-a085-6b2479cc90de","keyword":"null","originalKeyword":"null"},{"id":"8a859d9e-ea88-4f3d-bb1e-e9bfc40a65c8","keyword":"null","originalKeyword":"null"},{"id":"afbf2f1b-a978-43cb-b927-1038ce2db773","keyword":"null","originalKeyword":"null"},{"id":"183229e9-8af3-48df-a36b-66c1cc085dfc","keyword":"null","originalKeyword":"null"}],"language":"zh","publisherId":"0412-1961_1999_1_22","title":"NiCrBSi-WC耐磨钎焊涂层的制备","volume":"35","year":"1999"},{"abstractinfo":"采用72Ag-28Cu钎料对铪与铜进行了真空钎焊试验.钎焊温度为820~ 920℃,保温时间为1~45 min.研究了钎焊温度与保温时间对Hf/72Ag-28Cu/Cu钎焊接头组织和强度的影响,采用扫描电子显微镜(SEM)观察钎焊接头组织形貌,用能谱仪(EDS)进行化学成分分析,用X射线衍射(XRD)进行物相分析.结果表明:随着钎焊温度的升高与保温时间的延长,接头剪切强度先升高后降低;在钎焊温度为840℃、保温时间为15 min的真空钎焊条件下,钎缝中的各相分布均匀,且尚未粗化,相比温度升高和保温时间延长获得的大块连续状相而言更有分布优势,起到了弥散强化的作用,并有利于应力的缓解释放,此时剪切强度最高,达到了最大的201 MPa,钎缝内形成了良好的结合界面;钎焊接头界面生成了Cu51 Hf14,Cu8Hf3金属间化合物,但Cu-Hf化合物过多会对缺陷比较敏感,易产生裂纹,降低接头强度;Cu-Hf化合物过少导致没有形成良好冶金结合;因此,钎焊温度过高或过低,保温时间过长或过短对接头强度都不利.接头的界面结构为Hf/Cu-Hf化合物+Hf基固溶体/Hf基固溶体+Ag-Cu共晶组织+Cu-Hf化合物+Cu基固溶体/Cu.","authors":[{"authorName":"路希龙","id":"cf8a8772-7797-4b32-9a54-8b2cc87b4f6a","originalAuthorName":"路希龙"},{"authorName":"刘平","id":"1eb69bd6-a7a5-44fb-a91b-e438f2731291","originalAuthorName":"刘平"},{"authorName":"刘新宽","id":"7f2b07a0-a809-403b-9793-af7c67a65514","originalAuthorName":"刘新宽"},{"authorName":"陈小红","id":"8dfa899d-c411-4ada-954a-37640f30a791","originalAuthorName":"陈小红"},{"authorName":"何代华","id":"bbc5ec1b-23a7-4a5a-b88e-91b56f335fad","originalAuthorName":"何代华"},{"authorName":"马凤仓","id":"aa0a9a15-112d-4abb-93aa-eaa24ac2d7ea","originalAuthorName":"马凤仓"}],"doi":"10.13373/j.cnki.cjrm.2014.01.004","fpage":"22","id":"d761c1f3-c790-482c-a685-222a531e185f","issue":"1","journal":{"abbrevTitle":"XYJS","coverImgSrc":"journal/img/cover/XYJS.jpg","id":"67","issnPpub":"0258-7076","publisherId":"XYJS","title":"稀有金属"},"keywords":[{"id":"7c06a406-8c86-4038-bd16-4bd6569a410f","keyword":"铪","originalKeyword":"铪"},{"id":"d879559f-9147-42ec-9d17-a8b67dee3e4b","keyword":"铜","originalKeyword":"铜"},{"id":"12638e8b-65c4-4d64-9fa6-e1332a0583b9","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"302cd207-61fc-4eec-b70a-67b05f4d9789","keyword":"组织","originalKeyword":"组织"},{"id":"e03feea5-758f-47c1-a411-fa4e32a35cee","keyword":"强度","originalKeyword":"强度"}],"language":"zh","publisherId":"xyjs201401004","title":"铪与铜钎焊接头的组织与强度","volume":"38","year":"2014"},{"abstractinfo":"采用高频感应加热装置制备了锌基合金钎料,并以纯铝为母材进行润湿试验,并采用该钎料分别对2A12铝合金、55%SiCp/Al复合材料进行钎焊,分析了合金钎料的显微组织、成分、熔化温度范围,并对合金钎料及钎焊接头的拉剪强度进行了测试.结果表明:自制锌基合金钎料主要由α-Al固溶体、η-Zn固溶体和共晶组织组成,熔化温度区间为361~398℃;锌基合金钎料在纯铝上具有较好的润湿性;使用锌基合金钎料钎焊铝合金,其钎缝组织为η-Zn相、细小的共晶组织、树枝状及块状的α-Al相;钎焊55 %SiCp/Al复合材料,其钎缝组织由铝的共析组织、η-Zn相、条纹状共晶组织及细小的共晶组织组成;钎料、2A12铝合金钎焊接头以及55%SiCp/Al复合材料钎焊接头的抗剪强度分别为237,127,109 MPa.","authors":[{"authorName":"马志鹏","id":"46a9fa5f-f088-44af-9a06-f7b065f97501","originalAuthorName":"马志鹏"},{"authorName":"闫久春","id":"2d5463f9-a7c6-44e2-ae11-50a9cc647aaa","originalAuthorName":"闫久春"},{"authorName":"张旭昀","id":"bd720bd8-9a86-438b-bfa4-b693c23fd7d0","originalAuthorName":"张旭昀"},{"authorName":"郭光伟","id":"37625180-6da8-425a-96a5-bd5beb46ad73","originalAuthorName":"郭光伟"}],"doi":"","fpage":"85","id":"7a153f5a-36c0-4611-9bf0-87f5895f1abd","issue":"2","journal":{"abbrevTitle":"JXGCCL","coverImgSrc":"journal/img/cover/JXGCCL.jpg","id":"45","issnPpub":"1000-3738","publisherId":"JXGCCL","title":"机械工程材料"},"keywords":[{"id":"f1861b60-86b9-4245-8ade-d672b7126204","keyword":"锌基钎料","originalKeyword":"锌基钎料"},{"id":"950e72eb-fef3-4781-be26-45570d39feca","keyword":"钎焊","originalKeyword":"钎焊"},{"id":"dacbce88-6f70-44fe-8aa1-ef3900f43869","keyword":"铝合金","originalKeyword":"铝合金"},{"id":"f8f8da6c-5877-46e1-b320-bf979cf4fa26","keyword":"润湿性","originalKeyword":"润湿性"}],"language":"zh","publisherId":"jxgccl201502019","title":"铝钎焊用锌基合金钎料的制备及钎焊接头的组织和抗剪强度","volume":"39","year":"2015"}],"totalpage":63,"totalrecord":624}