RU95101499A - Iron-based powder material - Google Patents

Iron-based powder material

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Publication number
RU95101499A
RU95101499A RU95101499/02A RU95101499A RU95101499A RU 95101499 A RU95101499 A RU 95101499A RU 95101499/02 A RU95101499/02 A RU 95101499/02A RU 95101499 A RU95101499 A RU 95101499A RU 95101499 A RU95101499 A RU 95101499A
Authority
RU
Russia
Prior art keywords
carbide
iron
boride
powder
chromite
Prior art date
Application number
RU95101499/02A
Other languages
Russian (ru)
Other versions
RU2080408C1 (en
Inventor
А.И. Белик
В.В. Виноградов
Original Assignee
Хабаровский государственный технический университет
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Хабаровский государственный технический университет filed Critical Хабаровский государственный технический университет
Priority to RU95101499A priority Critical patent/RU2080408C1/en
Publication of RU95101499A publication Critical patent/RU95101499A/en
Application granted granted Critical
Publication of RU2080408C1 publication Critical patent/RU2080408C1/en

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  • Powder Metallurgy (AREA)

Abstract

FIELD: powder metallurgy. SUBSTANCE: iron-based powder material containing (in wt %) chromium, 2.2-2.6; carbon, 0.1-0.2; boron, 0.3-0.45; silicon, 0.3-0.45; and strengthening additive, additionally contains nickel, 11.0-11.5; said strengthening additive being carbide-boride composite powder prepared from chromite, 2.0-8.0. Presence of the latter in powder material leads to a high density of caked material and high bonding strength between carbide-boride particles and iron matrix due to coherent bonding of iron in material both with carbide-boride particles and with iron matrix. Material may find use when fabricating parts operating in a corrosion medium under elevated loadings, and also for fabricating valve seats for internal combustion engines. EFFECT: increased wear and heat resistance, and density of caked parts.

Claims (1)

Изобретение относится к порошковой металлургии, к материалам для работы в паре трения при повышенных температурах. Техническая задача: повышение износостойкости, жаростойкости и плотности спеченных деталей. Поставленная задача достигается тем, что порошковый материал на основе железа, содержащий хром, углерод, бор, кремний и упрочняющую добавку, дополнительно содержит никель, а в качестве упрочняющей добавки карбидно-боридный композиционный порошок, синтезированный из хромита, при следующем соотношении компонентов, мас. %: хром 2,2 - 2,6; углерод 0,1 - 0,2; бор 0,3 - 0,45; кремний 0,3 - 0,45; никель 11,0 - 11,5; карбидно-боридный композиционный порошок, синтезированный из хромита 2 - 8; железо остальное. Наличие в составе порошкового материала карбидно-боридного порошка, синтезированного из хромита, позволяет достичь высокой плотности спеченного материала и высокой прочности сцепления карбидно-боридных частиц с матрицей за счет когерентной связи железа в материале, как с частицами карбидно-боридного порошка, так и с железной матрицей. Это, в свою очередь, приводит к повышению износостойкости и жаростойкости. Предложенный материал может быть использован при изготовлении деталей, работающих в коррозионной среде при повышенных нагрузках, а также для изготовления седел клапанов двигателей внутреннего сгорания.The invention relates to powder metallurgy, to materials for working in a friction pair at elevated temperatures. Technical task: increasing the wear resistance, heat resistance and density of sintered parts. This object is achieved in that the iron-based powder material containing chromium, carbon, boron, silicon and a hardening additive additionally contains nickel, and as a hardening additive, a carbide-boride composite powder synthesized from chromite, in the following ratio, wt. %: chromium 2.2-2.6; carbon 0.1 to 0.2; boron 0.3 - 0.45; silicon 0.3 to 0.45; nickel 11.0 - 11.5; carbide-boride composite powder synthesized from chromite 2-8; iron the rest. The presence of a carbide-boride powder synthesized from chromite in the composition of the powder material makes it possible to achieve a high density of the sintered material and high adhesion strength of the carbide-boride particles to the matrix due to the coherent bonding of iron in the material, both with particles of carbide-boride powder and with iron matrix. This, in turn, leads to increased wear resistance and heat resistance. The proposed material can be used in the manufacture of parts operating in a corrosive environment at high loads, as well as for the manufacture of valve seats of internal combustion engines.
RU95101499A 1995-01-31 1995-01-31 Iron-base powdery material RU2080408C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU95101499A RU2080408C1 (en) 1995-01-31 1995-01-31 Iron-base powdery material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU95101499A RU2080408C1 (en) 1995-01-31 1995-01-31 Iron-base powdery material

Publications (2)

Publication Number Publication Date
RU95101499A true RU95101499A (en) 1996-11-10
RU2080408C1 RU2080408C1 (en) 1997-05-27

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ID=20164488

Family Applications (1)

Application Number Title Priority Date Filing Date
RU95101499A RU2080408C1 (en) 1995-01-31 1995-01-31 Iron-base powdery material

Country Status (1)

Country Link
RU (1) RU2080408C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2778482C1 (en) * 2021-12-24 2022-08-22 Государственное Научное Учреждение Институт Порошковой Металлургии Имени Академика О.В. Романа Powder material based on iron

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2778482C1 (en) * 2021-12-24 2022-08-22 Государственное Научное Учреждение Институт Порошковой Металлургии Имени Академика О.В. Романа Powder material based on iron

Also Published As

Publication number Publication date
RU2080408C1 (en) 1997-05-27

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