含二硫化钼镍铬基高温复合材料的高温氧化行为
Oxidation Behavior of Ni-Cr Based Powder Metallurgy Composites Containing MoS2 at High Temperatures
摘 要
采用粉末冶金方法制备了添加质量分数为6%二硫化钼的镍铬基复合材料;对其在800,900和950 ℃的高温氧化行为进行了研究,绘制了氧化动力学曲线;用扫描电镜对其氧化表面形貌和横截面组织进行了观察.结果表明:该镍铬基复合材料在800 ℃以及900 ℃氧化100 h后,其氧化动力学符合抛物线规律,在材料表面生成了Cr2O3和NiCr2O4氧化膜,具有一定的抗氧化性能;在950 ℃氧化时,表面氧化膜出现剥落.
粉末冶金
二硫化钼
高温氧化
Ni-Cr based composite
powder metallurgy
MoS2
high temperature oxidation
Abstract
Ni-Cr based composite material containing 6wt% MoS2 and 15wt% tungsten was prepared by powder metallurgy method.Oxidation behavior of the composite was studied in air at 800,900 and 950 ℃ and oxidation kinetics curves were gained.The oxide morphology and microstructure were analyzed by X-ray diffraction (XRD) and SEM.The scales formed at 800 and 900 ℃ were complicated,with a layer mainly composed of Cr2O3 and a small amount of NiCr2O4.The oxidation kinetics of the composite nearly followed the parabolic oxidation law.At 950 ℃,the oxide scales formed on the oxidized composite were found to be loose.
中图分类号 TG172.82
所属栏目 材料性能及其应用
基金项目
收稿日期 2007/9/26
修改稿日期 2008/1/14
网络出版日期
作者单位点击查看
备注薛茂权(1978-),男,江苏泰州人,讲师,硕士.
引用该论文: XUE Mao-quan. Oxidation Behavior of Ni-Cr Based Powder Metallurgy Composites Containing MoS2 at High Temperatures[J]. Materials for mechancial engineering, 2008, 32(9): 67～69
薛茂权. 含二硫化钼镍铬基高温复合材料的高温氧化行为[J]. 机械工程材料, 2008, 32(9): 67～69
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参考文献
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【2】黄志伟,袁福河,王光中,等.铸造镍基高温合金M963的高温低周疲劳行为[J].金属学报,2007,43(7):678-682.
【3】Wang Chaur-Jeng,Chen Shih-Ming.Microstructure and cyclic oxidation behavior of hot dip aluminized coating on Ni-base superalloy Inconel 718[J].Surface & Coatings Technology,2006,201(7):3862-3866.
【4】Singh H,Puri D,Prakash S,et al.Characterization of oxide scales to evaluate high temperature oxidation behavior of Ni-20Cr coated superalloys[J].Materials Science and Engineering A,2007(1/2):110-116.
【5】Xiong D S.Lubrication behavior of Ni-Cr based alloys containing MoS2 at high temperature[J].Wear,2001,251:184-188.
【6】薛茂权,黄之德.MoS2对镍基复合材料力学性能的影响[J].机械研究与应用,2007,20(1):38-39.
【7】杨世伟,娄瑾,姜艳,等.K4104 镍基高温合金渗Al-Si涂层氧化动力学[J].材料热处理学报,2006,27(1):108-111.
【8】李云,徐宁,郭建亭,等.镍基铸造高温合金K52在900 ℃恒温氧化性能的研究[J].高等学校化学学报,2007,28(1):113-116.
【9】Pieraggi B.Calculations of parabolic reaction rate constants[J].Oxidation of Metal,1987,27(3/4):177-185.
【10】李云,袁超,郭建亭,等.铸造镍基高温合金K35的氧化动力学[J].东北大学学报:自然科学版,2003,24(1):75-78.
【11】胡传顺,王福会.电子束表面熔凝处理对镍基高温合金熔凝层组织及其抗高温氧化性能的影响[J].金属热处理,2001,26(7):20-22.
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