稀有金属材料与工程
稀有金屬材料與工程
희유금속재료여공정
RARE METAL MATERIALS AND ENGINEERNG
2012年
3期
402-405
,共4页
苏中华%彭晓东%谢卫东%刘伟廷%杨宗伦
囌中華%彭曉東%謝衛東%劉偉廷%楊宗倫
소중화%팽효동%사위동%류위정%양종륜
Pt-3Rh%ZrO2%弥散强化%高温性能%拉丝漏板
Pt-3Rh%ZrO2%瀰散彊化%高溫性能%拉絲漏闆
Pt-3Rh%ZrO2%미산강화%고온성능%랍사루판
Pt-3Rh%ZrO2%dispersion-strengthen%high temperature property%drawing bushings
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-3Rh合金漏板相当.
用粉末冶金-內氧化-燒結方法製備ZrO2瀰散彊化Pt-3Rh閤金併測試、分析其高溫性能.結果錶明,Pt-3Rh閤金被瀰散彊化以後,800℃以下的膨脹繫數比Pt-3Rh大,800℃以上的膨脹繫數比Pt-3Rh小；高溫抗拉彊度和延伸率得到提高；高溫晶體結構穩定性增加;用其製備的拉絲漏闆高溫使用壽命與Pt-3Rh閤金漏闆相噹.
용분말야금-내양화-소결방법제비ZrO2미산강화Pt-3Rh합금병측시、분석기고온성능.결과표명,Pt-3Rh합금피미산강화이후,800℃이하적팽창계수비Pt-3Rh대,800℃이상적팽창계수비Pt-3Rh소；고온항랍강도화연신솔득도제고；고온정체결구은정성증가;용기제비적랍사루판고온사용수명여Pt-3Rh합금루판상당.
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.
