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자료유형
학술저널
저자정보
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제38권 제3호
발행연도
2005.6
수록면
126 - 135 (10page)

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SKD11 steel has been widely used for tools, metallic mold and die for press working because of its favorable mechanical properties such as high toughness and creep strength as well as excellent oxidation resistance. The ion nitrided tool steel containing Mo results in improvement of corrosion resistance, strength at high temperature and pitting resistance, especially in Cl? contained environment. But the Mo addition causes a disadvantage such as lower oxidation resistance at elevated temperature. In this study, several effects of ion-nitriding on the oxdation characteristics for SKD11 steel with various oxidation temperature were investigated. SKD11 steels were manufactured by using vacuum furnace and solutionized for 1 hr at 0,050℃, Steel surface was ion nitrided at 500℃ for 1 hr and S hr by ion nitriding equipment. Ion nitrided specimen were investigated by SEM, OM and hardness tester. Oxidation was carried out by using muffle furnace in air at 500℃, 700℃ and 900℃ for 1 hr, respectively. Oxidation behavior of the ion nitrided specimen was investigated by SEM, EDX and surface roughness tester. The conclusions of this study are as follows: It was found that plasma nitriding for 5 hr at 500℃, compared with ion nitriding for 1 hr at 500℃, had a thick nitrided layer and produced a layer with good wear, corrosion resistance and hardness as nitriding time increased. Nitrided SKD11 alloy for 1 hr showed that wear resistance and hardness decreased, whereas surface roughness increased, compared with nitrided SKD11 alloy for 5 hr. The oxidation surface at 900℃ showed a good corrosion resistance.

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Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
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