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熱處理對高硬度Ni—B涂層的影響及其時效機(jī)制
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TQ153.2

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Effect of Heat-Treatment on Microstructure and property of Electroless Ni-B Coating and Ageing Mechanism
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    摘要:

    通過化學(xué)鍍方法制備了高硬度Ni-B合金涂層,經(jīng)XRD分析確認(rèn)鍍態(tài)鍍層組織為過飽和固容體與非晶態(tài)的混合組織,詳細(xì)探討了涂層經(jīng)不同溫度熱處理的組織轉(zhuǎn)變及性能變化規(guī)律,并發(fā)現(xiàn)涂層組織經(jīng)較高溫度的熱處理后有Ni2B出現(xiàn),此外還觀察到組織在室溫下有不同程度的時效現(xiàn)象發(fā)生,分析了時效變化機(jī)理,其主要原因與Ni2B出現(xiàn)密切相關(guān),組織中是否有Ni2B出現(xiàn),數(shù)量的多少及Ni2B向Ni3B的轉(zhuǎn)變方式直接影響著涂層的時效劇烈程度。

    Abstract:

    A Ni B coating was prepared using chemical plating. XRD analysis shows that the microstructure of as coating is a mixture of amorphous and supersaturated solid solution. The microstructural transformation and properties of the coating for different heat treatment conditions are discussed in details. Ni 2B formed during high temperature ageing. Room temperature ageing was also observed. The age hardenability depends on existence and quantity of Ni 2B, and the transformation mode from Ni 2B to Ni 3B.

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饒群力 王浩偉 等.熱處理對高硬度Ni—B涂層的影響及其時效機(jī)制[J].稀有金屬材料與工程,2001,(1):50~53.[Rao Qunli, Wang Haowei, Zhou Yaohe. Effect of Heat-Treatment on Microstructure and property of Electroless Ni-B Coating and Ageing Mechanism[J]. Rare Metal Materials and Engineering,2001,(1):50~53.]
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  • 最后修改日期:2000-01-25
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