LI Ji YUAN Yongsheng Northeast University of Technology
,
Shenyang
,
ChinaYUAN Keqi University of Science and Technology Beijing
,
Beijing
,
China
金属学报(英文版)
TEM observation on the ionitriding layer was carried out on steels W18Cr4V,38CrMoAl and 1Cr18Ni9Ti,and AES of elementary analysis was also made on the outer surface of ionitrid- ing layer of austenitic stainless steel.Perhaps due to the ion-bombardment effect,a microcrystalline structure with texture was affirmed along surface of the ionitriding layer.It may be affected by cathodic sputtering and absorption that the atomic ratio of Cr/Fe in- creases and of Ni/Fe decreases on surface of nitriding layer on austenitic stainless steel 1Cr18Ni9Ti,thus the α-phase microcrystalline structure occurrs.
关键词:
ionitriding
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null
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null
李冀
,
苑永生
,
苑珂琦
金属学报
对W18Cr4V,38CrMoAl,1Cr18Ni9Ti3钢种的离子氮化层进行了透射电镜观察,并对奥氏体不锈钢的离子氮化表层用Auger能谱进行了成分分析,由于离子轰击效应,在离子氮化表层形成了α相微晶结构,其中存在织构.在离子轰击渗扩过程中,1Cr18Ni9Ti奥氏体不锈钢的渗层的表层发生成分变化,Cr/Fe比升高,Ni/Fe比下降,所以也形成了α相微晶结构。
关键词:
离子氮化
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microcrystal
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surface structure
彭彦彬
,
余春燕
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王社斌
,
韩培德
,
李天宝
机械工程材料
在离子氮化前后的H13钢表面沉积了CrAlN薄膜,研究了其在质量分数为3.5%的NaCl溶液中的耐腐蚀性,并用场发射扫描电镜观察了薄膜腐蚀前后的表面形貌。结果表明：H13钢基体表面沉积CrAlN薄膜后的耐腐蚀性能显著提高;经离子氮化和表面沉积CrAlN薄膜复合处理后,耐腐蚀性进一步提高,试验后表面没有出现明显的腐蚀坑及膜层脱落。
关键词:
CrAlN薄膜
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耐腐蚀性
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离子氮化
