Wear-Resistant and Corrosion-Resistant Amorphous Coating of High-Carbon Iron Alloy By Plasma Spraying

高碳铁合金等离子喷涂耐磨耐蚀非晶涂层

• 批准号: 04452273
• 负责人: KISHITAKE Katsuhiko
• 金额: $ 4.54万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04452273/
• 关键词: plasma spraying; amorphous phase; high-carbon iron alloy; crystallization; 高炭素鉄系合金; 高温耐摩耗材料; 急冷凝固

Fe-Cr-Mo alloys containing a large amount of carbon and/or boron were plasma sprayd under reduced pressure. All the sprayd coatings are amorphous and show a high hardness of 800 to 1000 DPN.The amophous coatings crystallize at about 773 K or more. Very fine carbides, borocarbides or borides precipitate in the matrix of chi phase and/or ferrite after crystallization of the amorphous phase ; bringing about a very high hardness of 1300 to 1450 DPN.The anodic polarization behavior of the as-sprayd amorphous coatings exhibits the activation-passivation transition in 1N H_2SO_4 solution. The active and passive current densities of the coatings increase with increasing boron content of the alloy. The corrosion resistance of the coating containing no boron is superior to SUS316L stainless steel coating.

采用减压等离子喷涂法制备了含有大量碳和/或硼的Fe-Cr-Mo合金。所有喷涂层均为非晶态，硬度高达800 ~ 1000 DPN，非晶态涂层的结晶温度约为773 K或更高。非晶相晶化后，在X相和/或铁素体基体中析出极细的碳化物、硼碳化物或硼化物，硬度高达1300 ~ 1450 DPN。涂层的主动和被动电流密度随着合金中硼含量的增加而增加。不含硼涂层的耐蚀性优于SUS 316L不锈钢涂层的耐蚀性上级。

项目成果

岸武勝彦: "減圧プラズマ溶射法による鉄基非晶質溶射皮膜の生成とその特性" 日本溶射協会誌. VoL.32 No.1. 1-7 (1995)

Katsuhiko Kishitake：“低压等离子喷涂铁基非晶喷涂涂层的生成及其特性”日本热喷涂协会杂志VoL.32 No.1（1995）。

K.Kishitake: "Formation and Properties of Iron Base Amorphous Coatings by Low Pressure Plasma Spraying" J.Jpn.Thermal Spraying Soc.Vol.32, No.1. 1-7 (1995)

K.Kishitake：“低压等离子喷涂铁基非晶涂层的形成和性能”J.Jpn.Thermal Spraying Soc.Vol.32，No.1。