分别采用料浆法和粉末包埋法在K4104镍基高温合金上制备Al-Si和Al渗层.借助X射线衍射(XRD)和电子探针(EPMA),详细分析Al-Si、Al渗层的微观组织,探讨渗层形成机理,并且对比研究Al-Si共渗层和单渗Al层的微观结构,找出Si对渗Al层组织结构的影响.结果表明:Al-Si共渗渗层中包含CrxSiy化合物、富Al的β、富Ni的β、Cr的碳化物和γ′相,单渗Al层则包含富Al的β、富Ni的β、Cr的碳化物和γ′相;Si的加入使Al-Si共渗层出现过渡层,过渡层导致Al元素含量由外向内的减少趋势较单渗Al的平缓.
参考文献
| [1] | 江龙平,徐可君,隋育松.提高涡轮叶片疲劳强度的几种措施[J].航空工程与维修,2002(6):44-45. |
| [2] | 李金桂.国外航空表面防护技术[J].航空科学技术,1995(04):29-31. |
| [3] | 蔡玉林.铝-硅涂层中Si的分布及作用[J].航空学报,1985(03):258. |
| [4] | Kicher T A;Mcrdie B G;Mccarter A et al.Performance of a silicon-modified aluminide coating in high temperature hot corrosion test conditions[J].Surface and Coatings Technology,1994,68/69:32-37. |
| [5] | Kim M T;Jung J S .Codeposition of Al and Si onto a low carbon steel using silicon dioxide and aluminum and its hot temperature oxidation properties[J].Surface and Coatings Technology,2002,161:218-223. |
| [6] | Kuo-Liang Wang;Fan-Shiong Chen;Goa-Shee Leu .The aluminizing and Al-Si codeposition on AISI HP alloy and the evaluation of their carburizing resistance[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):27-38. |
| [7] | 曹银春,丁毅,魏无际,石焕荣.热浸渗铝硅合金Q235钢的抗高温腐蚀性能研究[J].化工机械,2004(01):14-16. |
| [8] | Liao F S;Hsu C W;Gan D et al.Microstructures of first-stage aluminized coatings on nickel-based superalloys[J].Materials Science and Engineering A,1990,125:215-221. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%