公开(公告)号：US09751769B2

公开(公告)日：2017-09-05

申请号：US14411850

申请日：2013-06-03

Applicant: NISSHIN ENGINEERING INC.

Inventor： Shu Watanabe ,  Keitaroh Nakamura

IPC: C01B31/00 ,  C01B31/30 ,  H05H1/30

CPC classification number: C01B32/921 ,  H05H1/30

Abstract: A method for production of titanium carbide nanoparticles, the method having: a step for supplying titanium powder or titanium oxide powder into a thermal plasma flame; and a step for producing titanium carbide nanoparticles by supplying a reactive gas as a cooling gas and as a source of carbon at the downstream end of the thermal plasma flame. By varying the supplied quantity of the reactive gas, the oxygen concentration of the produced titanium carbide nanoparticles is varied. Therefore, for example, titanium carbide nanoparticles having different volume resistivity values can be produced.

公开(公告)号：US11798707B2

公开(公告)日：2023-10-24

申请号：US16961612

申请日：2019-01-10

Applicant: NISSHIN ENGINEERING INC.

Inventor： Shu Watanabe ,  Shiori Sueyasu ,  Keitaroh Nakamura

IPC: H01B1/02 ,  B22F3/02 ,  B22F1/054 ,  B22F1/142 ,  B22F1/102 ,  B22F9/12

CPC classification number: H01B1/02 ,  B22F1/054 ,  B22F1/102 ,  B22F1/142 ,  B22F3/02 ,  B22F9/12 ,  B22F2301/10 ,  B22F2304/054 ,  B22F2999/00 ,  B22F1/142 ,  B22F2201/02

Abstract: Provided are copper microparticles which have exceptional oxidation resistance, in which oxidation is reduced even when the copper microparticles are held at a firing temperature in an oxygen-containing atmosphere, and in which sintering also occurs. The copper microparticles have a particle diameter of 10-100 nm, have a surface coating material, and are such that, after the copper microparticles are held for one hour at a temperature of 400° C. in an oxygen-containing atmosphere, the particle diameter exceeds 100 nm while a copper state is retained.

公开(公告)号：US12163032B2

公开(公告)日：2024-12-10

申请号：US16954853

申请日：2018-12-06

Applicant: NISSHIN ENGINEERING INC.

Inventor： Shu Watanabe ,  Naohito Uemura ,  Keitaroh Nakamura

IPC: C09C3/06 ,  C01B21/076 ,  C01G25/00 ,  C09C1/00 ,  C23C4/10 ,  C23C4/134

Abstract: Provided are composite particles having the optical characteristic of a lower transmittance in the visible light region, i.e., a higher light-blocking performance in the visible light region, and a method for producing composite particles. The composite particles have at least one of Al and Ti formed into a composite with ZrN.

公开(公告)号：US10144060B2

公开(公告)日：2018-12-04

申请号：US15527947

申请日：2015-11-20

Applicant: NISSHIN ENGINEERING INC.

Inventor： Shu Watanabe ,  Keitaroh Nakamura ,  Shiori Sueyasu

IPC: B22F1/00 ,  B22F1/02 ,  B22F9/02 ,  B22F9/08

Abstract: In the present invention, a fine silver particle has a particle diameter of 65-80 nm and has, on the surface of the particle, a thin film comprising a hydrocarbon compound. The fine silver particle has an exothermic peal temperature of 140-155° C. in differential thermal analysis. If d denotes the particle diameter after firing at a temperature of 100° C. for one hour and D denotes the particle diameter before firing, it is preferable for the fine silver particle to have a particle growth rate, as represented by (d−D)/D (%), of 50% or higher.

公开(公告)号：US11691200B2

公开(公告)日：2023-07-04

申请号：US16963796

申请日：2019-01-10

Applicant: NISSHIN ENGINEERING INC.

Inventor： Shu Watanabe ,  Shiori Sueyasu ,  Keitaroh Nakamura

IPC: B22F9/12

CPC classification number: B22F9/12 ,  B22F2301/255 ,  B22F2304/054

Abstract: Provided are: a production method for silver fine particles that retain capabilities such as conductivity and make it possible to form wiring at even lower temperatures; and silver fine particles. A silver fine particle production method in which silver powder is used to produce silver fine particles by means of a gas phase method. The silver fine particle production method has a step for supplying an organic acid to the silver fine particles. The gas phase method is, for example, a plasma method or a flame method. The silver fine particles have a surface coating that includes at least a carboxyl group.

公开(公告)号：US20150175429A1

公开(公告)日：2015-06-25

申请号：US14411850

申请日：2013-06-03

Applicant: NISSHIN ENGINEERING INC.

Inventor： Shu Watanabe ,  Keitaroh Nakamura

IPC: C01B31/30

CPC classification number: C01B32/921 ,  H05H1/30

Abstract: A method for production of titanium carbide nanoparticles, the method having: a step for supplying titanium powder or titanium oxide powder into a thermal plasma flame; and a step for producing titanium carbide nanoparticles by supplying a reactive gas as a cooling gas and as a source of carbon at the downstream end of the thermal plasma flame. By varying the supplied quantity of the reactive gas, the oxygen concentration of the produced titanium carbide nanoparticles is varied. Therefore, for example, titanium carbide nanoparticles having different volume resistivity values can be produced.

Abstract translation: 一种生产碳化钛纳米颗粒的方法，该方法具有：将钛粉末或氧化钛粉末供应到热等离子体火焰中的步骤; 以及通过在热等离子体火焰的下游端提供作为冷却气体的反应性气体和碳源作为碳源来制造碳化钛纳米粒子的步骤。 通过改变反应气体的供给量，可以改变生成的碳化钛纳米粒子的氧浓度。 因此，例如可以制造具有不同体积电阻率值的碳化钛纳米粒子。