JP2020164991A5 - - Google Patents

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JP2020164991A5
JP2020164991A5 JP2020051224A JP2020051224A JP2020164991A5 JP 2020164991 A5 JP2020164991 A5 JP 2020164991A5 JP 2020051224 A JP2020051224 A JP 2020051224A JP 2020051224 A JP2020051224 A JP 2020051224A JP 2020164991 A5 JP2020164991 A5 JP 2020164991A5
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sintered body
metal
pressure sintered
body according
pressure
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JP2020164991A (en
JP7429432B2 (en
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Claims (11)

主としてTi(C,N)からなる硬質相粒子を金属からなる金属結合相にて結合し室温におけるビッカース硬さをHv1500以上とした加圧焼結体であって、
前記硬質相粒子の平均粒径を2μm以下とするとともに、5族又は6族に属する2400℃以上の高融点金属からなる前記金属結合相を質量%で10~0%の割合で含み、1000℃における高温ビッカース硬さをHv1200以上としたことを特徴とする加圧焼結体。
A pressure sintered body in which hard phase particles mainly composed of Ti (C, N) are bonded by a metal bonded phase composed of a metal and the Vickers hardness at room temperature is Hv1500 or higher.
The average particle size of the hard phase particles is 2 μm or less, and the metal bonded phase made of a refractory metal belonging to Group 5 or Group 6 having a melting point of 2400 ° C. or higher is contained in a proportion of 10 to 80 % by mass, 1000. A pressure sintered body characterized in that the high temperature Vickers hardness at ° C is Hv1200 or higher.
室温でのヤング率を400GPa以上としたことを特徴とする請求項1記載の加圧焼結体。 The pressure sintered body according to claim 1, wherein the Young's modulus at room temperature is 400 GPa or more. 室温での破壊靱性値を4MPa・m1/2以上としたことを特徴とする請求項2記載の加圧焼結体。 The pressure sintered body according to claim 2, wherein the fracture toughness value at room temperature is 4 MPa · m 1/2 or more. 前記金属結合相はMoであって、質量%で10~0%の割合で含むことを特徴とする請求項1乃至3のうちの1つに記載の加圧焼結体。 The pressure sintered body according to claim 1 , wherein the metal bonding phase is Mo and is contained in a proportion of 10 to 60 % by mass. 前記金属結合相はWであって、質量%で10~0%の割合で含むことを特徴とする請求項1乃至3のうちの1つに記載の加圧焼結体。 The pressure sintered body according to claim 1 , wherein the metal-bonded phase is W and is contained in a proportion of 10 to 80 % by mass. 前記金属結合相はTaであって、質量%で10~60%の割合で含むことを特徴とする請求項1乃至3のうちの1つに記載の加圧焼結体。 The pressure sintered body according to claim 1 , wherein the metal-bonded phase is Ta and is contained in a proportion of 10 to 60% by mass . 前記金属結合相はNbであって、質量%で10~50%の割合で含むことを特徴とする請求項1乃至3のうちの1つに記載の加圧焼結体。 The pressure sintered body according to claim 1 , wherein the metal-bonded phase is Nb and is contained in a proportion of 10 to 50% by mass . 主としてTi(C,N)からなる硬質相粒子を金属からなる金属結合相にて結合し室温及び1000℃におけるビッカース硬さをそれぞれHv1500以上及びHv1200以上とする加圧焼結体の製造方法であって、
2μm以下の平均粒径のTi(C,N)からなる粒子に対して、2μm以下の平均粒径の5族又は6族に属する2400℃以上の高融点金属からなる粒子を質量%で10~0%の割合で混合する混合工程と、1700℃以上且つ前記高融点金属の融点以下の温度で加圧する加圧焼結工程と、を含むことを特徴とする加圧焼結体の製造方法。
It is a method for producing a pressure sintered body in which hard phase particles mainly composed of Ti (C, N) are bonded by a metal bonded phase composed of a metal and the Vickers hardness at room temperature and 1000 ° C. is Hv1500 or higher and Hv1200 or higher, respectively. hand,
Particles made of refractory metal at 2400 ° C or higher belonging to Group 5 or Group 6 having an average particle size of 2 μm or less are 10 to 10% by mass with respect to particles made of Ti (C, N) having an average particle size of 2 μm or less. A method for producing a pressure sintered body, which comprises a mixing step of mixing at a ratio of 80 % and a pressure sintering step of pressurizing at a temperature of 1700 ° C. or higher and lower than the melting point of the refractory metal. ..
前記混合工程はボールミルによることを特徴とする請求項8記載の加圧焼結体の製造方法。 The method for producing a pressure sintered body according to claim 8, wherein the mixing step is performed by a ball mill. 前記加圧焼結工程はパルス通電加圧焼結によることを特徴とする請求項8又は9に記載の加圧焼結体の製造方法。 The method for producing a pressure sintered body according to claim 8 or 9, wherein the pressure sintering step is performed by pulse energization pressure sintering. 前記高融点金属は、Mo,W,Ta,Nbのうちの1つ以上からなることを特徴とする請求項8乃至10のうちの1つに記載の加圧焼結体の製造方法。 The method for producing a pressure sintered body according to any one of claims 8 to 10, wherein the refractory metal comprises one or more of Mo, W, Ta, and Nb.
JP2020051224A 2019-03-29 2020-03-23 Pressure sintered body and its manufacturing method Active JP7429432B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019066073 2019-03-29
JP2019066073 2019-03-29

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JP2020164991A JP2020164991A (en) 2020-10-08
JP2020164991A5 true JP2020164991A5 (en) 2022-07-07
JP7429432B2 JP7429432B2 (en) 2024-02-08

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6202787B2 (en) 2012-05-31 2017-09-27 株式会社アライドマテリアル Molybdenum heat-resistant alloy, friction stir welding tool, and manufacturing method

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