KR940021752A - Stainless Nitride Products - Google Patents

Stainless Nitride Products Download PDF

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Publication number
KR940021752A
KR940021752A KR1019930010701A KR930010701A KR940021752A KR 940021752 A KR940021752 A KR 940021752A KR 1019930010701 A KR1019930010701 A KR 1019930010701A KR 930010701 A KR930010701 A KR 930010701A KR 940021752 A KR940021752 A KR 940021752A
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KR
South Korea
Prior art keywords
nitride
stainless
crystalline chromium
layer
product
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KR1019930010701A
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Korean (ko)
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KR100289286B1 (en
Inventor
마사아키 다하라
하루오 센보쿠야
겐조 기타노
다다시 하야시다
데루오 미나토
Original Assignee
아오키 히로시
다이도우 산소 가부시키가이샤
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Priority claimed from JP04177668A external-priority patent/JP3086839B2/en
Priority claimed from JP04023493A external-priority patent/JP3174422B2/en
Application filed by 아오키 히로시, 다이도우 산소 가부시키가이샤 filed Critical 아오키 히로시
Publication of KR940021752A publication Critical patent/KR940021752A/en
Application granted granted Critical
Publication of KR100289286B1 publication Critical patent/KR100289286B1/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

본 발명은 오스테나이트계 스테인레스 제품의 표면층을 하기 (A), (B)를 구비한 특수한 질화경화층에 형성한다. (A) 결정질의 크롬 질화물을 실질적으로 함유하고 있지 않다. (B) 모상인 오스테나이트상으로 2~12중량%의 N원자가 함유되어 있다.This invention forms the surface layer of an austenitic stainless steel product in the special nitride hardening layer provided with following (A) and (B). (A) It does not contain crystalline chromium nitride substantially. (B) It is austenite phase which is a mother phase, and contains 2-12 weight% of N atoms.

이에 따라 다음과 같은 특수한 효과를 얻을수 있다. 즉 본 발명의 스테인레스 질화생성물, 표면층을 구성하는 질화경화층에, 결정크롬 질화물을 실질적으로 함유하고 있지 않기 때문에, 질화경화층에 결정크롬 질화물을 포함하는 스테인레스 질화생성물에 비해서 오스테나이트상(모상)중의 고용크롬이 결정 크롬질화물의 석출생성에 의해 소비되고 있지않다. 따라서 상기 질화 경화층에 있어서, 모상의 결정크롬의 작용에 의해 발생하는 부동태피막(산화피막)이 충분히 생성하고, 그에따라 상기 질화경화층이 상기모상과 같은 뛰어난 내식성을 갖게 된다. 또 상기 결정크롬 질화물의 석출생성에 기초해, 스테인레스 질화생성물의 길이 변화와 면조밀도의 악화가 생기지 않고, 질화처리후에 최종 마무리 가공을 할 필요가 없어진다. 또한, 이발명의 스테인레스 질화생성물은 표면층의 모상중에 2-12%의 N원자가 침투함유됨에 따라 표면경도가 높아지고 결정크롬 질화물로 이루어진 질화경화층에 의해 형성되는 것과 거의같은 높은 표면경도를 구비하게 되는 것을 특징으로 한다.As a result, the following special effects can be obtained. That is, since the nitride nitride layer constituting the stainless nitride product and the surface layer of the present invention does not substantially contain crystalline chromium nitride, an austenite phase (mother phase) is compared with the stainless nitride product containing crystalline chromium nitride in the nitride hardened layer. Soluble chromium is not consumed due to precipitation of crystalline chromium nitride. Therefore, in the above-mentioned nitride hardened layer, the passivation film (oxidation film) which generate | occur | produces by the action of a crystalline chromium of a mother phase fully generate | occur | produces, and accordingly, the said nitride hardened layer will have the outstanding corrosion resistance like the said mother phase. Further, based on the precipitation production of the crystalline chromium nitride, the change in the length of the stainless nitride product and the deterioration of the surface density do not occur, and there is no need to perform the final finishing process after the nitriding treatment. In addition, the stainless nitride product of the present invention has high surface hardness as 2-12% of N atoms penetrate into the matrix of the surface layer, and has a high surface hardness almost the same as that formed by a nitride hardened layer made of crystalline chromium nitride. It features.

Description

스테인레스 질화생성물Stainless Nitride Products

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 실시예 생성물에 대한 EPMA선 분석곡선도.1 is an EPMA line analysis curve for the example product.

Claims (4)

모제가 오스테나이트계 스테인레스로 이루어지고, 적어도 표층부의 일부가 하기의 (A), (B)를 구비한 질화경화층으로 구성되어 있는 것을 특징으로 하는 스테인레스 질화생성물. (A) 결정질의 크롬질화물을 실질적으로 함유하지 않는다. (B) 모상인 오스테나이트상으로 2~12중량%의 N원자가 함유되어 있다.The mother nitride consists of austenitic stainless steel, and at least a part of surface layer part consists of a nitride hardening layer provided with following (A) and (B), The stainless nitride product characterized by the above-mentioned. (A) It does not contain crystalline chromium nitride substantially. (B) It is austenite phase which is a mother phase, and contains 2-12 weight% of N atoms. 제1항에 있어서, 오스테나이트계 스테인레스가 크롬을 22중량% 이상 함유하고 있는 것을 특징으로 하는 스테인레스 질화생성물.The stainless nitride product according to claim 1, wherein the austenitic stainless steel contains at least 22% by weight of chromium. 제1항 또는 제2항에 있어서, 오스테나이트계 스테인레스가 몰리브덴을 1.5중량%이상 함유하고 있는 것을 특징으로 하는 스테인레스 질화생성물.The stainless nitride product according to claim 1 or 2, wherein the austenitic stainless steel contains molybdenum at least 1.5% by weight. 제1항에 있어서, 구성요소(B)만이 하기와 같이 제한되어있는 것을 특징으로 하는 스테인레스 질화생성물. (B) 모상인 오스테나이트상으로 2-5중량%의 N원자가 함유되어있다.The stainless nitride product according to claim 1, wherein only component (B) is limited as follows. (B) 2-5% by weight of N atoms in the austenite phase as a parent phase. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930010701A 1992-06-12 1993-06-10 Stainless Nitride Products KR100289286B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP04177668A JP3086839B2 (en) 1992-06-12 1992-06-12 Forming method of vehicle wheel disc from plate material
JP92-177668 1992-06-12
JP93-40234 1993-03-01
JP04023493A JP3174422B2 (en) 1993-03-01 1993-03-01 Stainless nitride products

Publications (2)

Publication Number Publication Date
KR940021752A true KR940021752A (en) 1994-10-19
KR100289286B1 KR100289286B1 (en) 2001-05-02

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KR1019930010701A KR100289286B1 (en) 1992-06-12 1993-06-10 Stainless Nitride Products

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210002384U (en) * 2018-09-30 2021-10-27 주식회사 유니락 High Corrosion Resistant Coating Film For High Precision Regulator Member and Manufacturing Method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200261350Y1 (en) * 2001-10-06 2002-01-24 이덕선 Double pipe of boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210002384U (en) * 2018-09-30 2021-10-27 주식회사 유니락 High Corrosion Resistant Coating Film For High Precision Regulator Member and Manufacturing Method thereof

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