弥散强化Pt-3Rh合金高温性能(英文)  

High Temperature Performance of Dispersion Strengthened Pt-3Rh Alloy

作　　者：苏中华[1] 彭晓东[1] 谢卫东[1] 刘伟廷 杨宗伦 

机构地区：[1]重庆大学,重庆400045 [2]重庆国际复合材料有限公司,重庆400082

出　　处：《稀有金属材料与工程》2012年第3期402-405,共4页Rare Metal Materials and Engineering

基　　金：National Technology Support Project;Key Technology Development and Industrialization of Superfine E-glassfiber(2007BAE331301)

摘　　要：用粉末冶金-内氧化-烧结方法制备ZrO2弥散强化Pt-3Rh合金并测试、分析其高温性能。结果表明,Pt-3Rh合金被弥散强化以后,800℃以下的膨胀系数比Pt-3Rh大,800℃以上的膨胀系数比Pt-3Rh小;高温抗拉强度和延伸率得到提高;高温晶体结构稳定性增加;用其制备的拉丝漏板高温使用寿命与Pt-10Rh合金漏板相当。ZrO2 dispersion-strengthened Pt-3Rh alloy was prepared by powder metallurgy-internal oxidation-sintering. The high temperature properties were tested and analyzed. After Pt-3Rh are dispersion strengthened, its coefficient of expansion is bigger than that of Pt-3Rh below 800 ℃ and smaller than that of Pt-3Rh above 800 ℃. The thermal tensile strength and elongation are increased. The stability of crystal structure is strengthened. The service life of strengthened Pt-3Rh drawing bushings is equal to that of Pt-10Rh.

关 键 词：Pt-3Rh ZRO2 弥散强化 高温性能 拉丝漏板 

分 类 号：TG146[一般工业技术—材料科学与工程]