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固体渗硼对AISIH13钢耐磨和耐蚀性能的影响 Stenio Cristaldo',Amadeu Lombardi Neto’, Carlos Alberto Picon
George Edward Totten', Luiz Carlos Castelettis
(1. EESC, University of Sao Paulo-USP, Brazil;2. UTFPR-LD, Londrina, PR, Brazil;
3. EEIS-UNESP, Brazil. ;4. Portland State University, Portland, USA ;
5.EESC, University of Sao Paulo-USP, Brazil)
摘要：研究了固体渗硼的时间和温度对AISIH13工具钢耐磨和耐蚀性能的影响。将900℃和1000℃图
体渗硼2h和4h的渗硼试样和未渗硼试样进行无磨料固定球的微量磨损试验，耐蚀性能则通过 0.1molHCI溶液中进行的动电位极化试验测定。渗硼试样中均形成了高硬度的渗层，钢的成分对渗层的硬度、厚度、渗层/基体界面的形貌和形成相等特性均有影响。对于合金元素含量比碳钢高的AISIH13钢，所形成的渗层硬度较高，渗层较薄，渗层/基体界面较平坦。在上述工艺条件下获得的渗层中,均发现有Fe,B、FeB和CrB等化物。渗硼试样的耐磨和耐蚀性能得到了显著的改善，且在1000℃渗硼的效果最佳。
关键调：固体渗硼；AISIH13钢；渗硼；磨损；腐蚀
中图分类号：TG156.8*7；TG142.12
文献标识码：A
文章编号：1008-1690(2016)03-0031-04
Influence of PackBoriding on the Wear and Corrosion
ResistanceofAISIH13Steel
Stenio Cristaldo',AmadeuLombardi Neto,Carlos AlbertoPicon
George Edward Totten', Luiz Carlos Casteletti
(1.EESC, University of Sao Paulo-USP, Brazil;2.UTFPR-LD, Londrina, PR, Brazil;
3.EEIS-UNESP,Brazil.;4.Portland StateUniversity,Portland,USA;
5.EESC,University of Sao Paulo-USP,Brazil)
Abstract: In this work the effect of pack boriding time and temperature on the wear and corrosion resistance of AISI H13 tool steel was investigated. Steel samples were pack borided at 900 and 1 000 °C for periods of 2 h and 4 h; followed by non-abrasive fixed-ball microwear tests on borided and non-borided samples. The corrosion resistance was evaluated by potentiodynamic polarization tests in O. 1 mol HCl. High hardness layers were formed on the samples for all treatment conditions employed. The layer' s properties, such as hardness, thickness, layer/ substrate interface morphology and phases formed, were influenced by steel composition. For AISI H13 steel, which has a larger amount of alloying elements than carbon steel, the formed layers were harder, thinner, with a smoother interface. For all treatment conditions, the presence of Fe,B, FeB and CrB were identified. The wear and corrosion resistance of borided samples was significantly increased. The best results were obtained for samples borided at 1 000 C
Key words: pack boriding; AISI H13 steel; boriding; wear; corrosion
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引言
硼化物层可通过硼的电化学沉积或表面化学热收稿日期：2016-03-05
《热处理》
万方数据
处理形成。渗硼是使硼在高温下扩散到基体中，并与基体金属反应，从而形成硼化物。金属渗硼可在不同的介质中实施，如气态乙硼烷或卤化硼、熔融硼
2016年第31卷第3期
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