Sumitomo Metal Industries, Inc.

Nippon Steel Sumitomo Metal Corporation

Showa Denko K.k.

Mitsubishi Corporation

Other

Nec Corporation

Resonac Corporation

Minami Engineering Co., Ltd.

Samsung Electronics Co., Ltd.

Nippon Steel Corporation

Kunio Kondo

Yuji Arai

Hisashi Amaya

Ryuji Monden

Hideki Takabe

Masakatsu Ueda

Takahiro Kushida

Masaaki Igarashi

Kazuhiro Ogawa

Tomohiko Omura

Yohei Otome

Katsumi Murofushi

Yasutaka Okada

Takashi Takano

Masumi Kuritani

Yu Gao

Takehiko Murakami

Akihito Yamane

Yujiro Fukuda

Miyuki Yamamoto

Tsuyoshi Kato

Kaoru Uchiyama

Kazuhiro Shimoda

Keiichi Nakamura

Keiichi Kondo

Hirokazu Okada

Hiroyuki Hirata

Kenji Kobayashi

Yusaku Tomio

Kouichi Kuroda

Yoshikazu Hosoda

Masahiko Hamada

Masayuki Sagara

Takayuki Itsuji

Tsuyoshi Katoh

Kazuo Okamura

Tamami Koyama

Taro Ohe

Nobuyuki Hisamune

Keisuke Hitoshio

Kenichi Beppu

Masahide Umino

Yuichi Komizo

Hajime Osako

Katsumasa Hirose

Susumu Hirano

Seiji Tanimoto

Tomoaki Sera

Kanjiro Sako

Ryusuke Sato

Hidetoshi Kurata

Mitsuru Yoshizawa

Masanao Seo

Kaori Miyata

Toshiharu Abe

Hideki Mukuno

Jun Matsui

Tomoki Mori

Kazuyo Kushida, Legal Representative

Shinjiro Nakatsuka

Michiharu Hariki

Yoke Ai Gan

Haruka Osako

Nobuhiro Natori

Yosuke Fukuchi

Nobutoshi Murao

Naruhito Shouji

Masaru Tajima

Yuichi Yano

Hitomi Kane

One aspect of the present invention provides a polishing method including polishing a sliding part of a machine device by producing fullerene-aggregated particles by making the sliding part slide while a polishing-agent composition containing fullerenes and a solvent of the fullerenes is applied to the sliding part.

Polishing method, machine device manufacturing method, and machine device

This method for producing a lubricating oil composition includes: a step of dissolving fullerenes in a base oil mainly composed of a multiply alkylated cyclopentane oil or an ionic liquid containing an imide as a negative ion to obtain a fullerene solution; and a step of producing fullerenes adduct by subjecting the above-described fullerene solution to a heat treatment in a non-oxidizing atmosphere.

Method for producing lubricating oil composition, and lubricating oil composition

A method for producing a lubricating oil composition of the present embodiment includes an irradiation step of irradiating a fullerene solution in which fullerenes are dissolved in a base oil with radiation, in which the above-described radiation is ultraviolet light or ionizing radiation.

Lubricating oil composition and method for producing lubricating oil composition

A lubricating oil composition is provided, including a fullerene and a base oil, in which the fullerene is a fullerene sublimate, and the base oil is a multiply alkylated cyclopentane oil or an ionic liquid.

Lubricating oil composition, method for producing same and vacuum apparatus

A method for producing a lubricating oil composition includes: a step of mixing a base oil and fullerene, dissolving a soluble component of the fullerene in the base oil, and obtaining a mixture of the base oil and fullerene; a step of removing an insoluble component included in the mixture and obtaining a fullerene solution; and a step of heat-treating the fullerene solution.

Lubricating oil composition and method for producing same

A method for inspecting a lubricant oil composition containing a base oil and a fullerene, the method including: measuring at least one of a lamellar length of the lubricating oil composition and a most abundant diameter in a particle size distribution obtained by a dynamic light scattering method, and selecting the lubricating oil composition whose measured value is within a set range.

Method for inspecting lubricating oil composition and method for producing lubricating oil composition

The lubricating oil composition includes a base oil and a fullerene adduct.

Lubricating oil composition and method of producing the same

A stainless steel for oil wells which has excellent high-temperature corrosion resistance and can stably obtain a strength of not less than 758 MPa is provided. The stainless steel for oil wells contains, by masse, C: not more than 0.05%, Si: not more than 1.0%, Mn: 0.01 to 1.0%, P: not more than 0.05%, S: less than 0.002%, Cr: 16 to 18%, Mo: 1.8 to 3%, Cu: 1.0 to 3.5%, Ni: 3.0 to 5.5%, Co: 0.01 to 1.0%, Al: 0.001 to 0.1%, O: not more than 0.05%, and N: not more than 0.05%, the balance being Fe and impurities, and satisfies Formulas (1) and (2):Cr+4Ni+3Mo+2Cu&#x2267;44&#x2003;&#x2003;(1)Cr+3Ni+4Mo+2Cu/3&#x2266;46&#x2003;&#x2003;(2)

Stainless steel for oil wells and stainless steel pipe for oil wells

There is provided a material for an anode buffer lay which permits the use of an organic solvent as a solvent an anode buffer layer-forming solution, and is capable forming an anode buffer layer that does not dissolve even win coated with a luminescent layer-forming material solution containing an organic solvent as a solvent, and which is capable of producing an organic EL element having high electrical power efficiency and long life.

Composition for anode buffer layer, high-molecular weight compound for anode buffer layer, organic electroluminescence element, and production process and uses of the same

The chemical composition of a stainless steel in accordance with the present invention consists of C: not more than 0.05%, Si: not more than 0.5%, Mn: 0.01 to 0.5%, P: not more than 0.04%, S: not more than 0.01%, Cr: more than 16.0 and not more than 18.0%, Ni: more than 4.0 and not more than 5.6%, Mo: 1.6 to 4.0%, Cu: 1.5 to 3.0%, Al: 0.001 to 0.10%, and N: not more than 0.050%, the balance being Fe and impurities, and satisfies Formulas (1) and (2). Also, the micro-structure thereof contains a martensitic phase and a ferritic phase having a volume ratio of 10 to 40%, and the ferritic phase distribution ratio is higher than 85%.Cr+Cu+Ni+Mo &#x2267;&#x2003;&#x2003;()&#x2212;(C+N)+Mn+Ni+Cu/(Cr+Mo) &#x2266;&#x2212;&#x2003;&#x2003;()

Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well

A high-strength stainless steel for oil well having corrosion resistance excellent in a high-temperature environment, having excellent SSC resistance at normal temperature, and having better workability than 13% Cr steels has a chemical composition containing, by mass percent, C: at most 0.05%, Si: at most 1.0%, Mn: at most 0.3%, P: at most 0.05%, S: less than 0.002%, Cr: over 16% and at most 18%, Mo: 1.5 to 3.0%, Cu: 1.0 to 3.5%, Ni: 3.5 to 6.5%, Al: 0.001 to 0.1%, N: at most 0.025%, and O: at most 0.01%, the balance being Fe and impurities, a microstructure containing a martensite phase, 10 to 48.5%, by volume ratio, of a ferrite phase and at most 10%, by volume ratio, of a retained austenite phase, yield strength of at least 758 MPa and uniform elongation of at least 10%.

High-strength stainless steel for oil well and high-strength stainless steel pipe for oil well

There is provided a method for manufacturing a seamless steel pipe for line pipe, capable of improving the toughness of the seamless steel pipe for line pipe. A round billet having a chemical composition, by mass percent, of C: 0.02 to 0.15%, Si: at most 0.5%, and Mn: 0.5 to 2.5%, the balance being Fe and impurities, is heated. The heated round billet is piercing-rolled to produce a hollow shell. The hollow shell is elongated and rolled and sized to produce a seamless steel pipe. The seamless steel pipe is water cooled, and the water cooling is stopped when the temperature of the seamless steel pipe reaches at most 450&#xb0; C. The water-cooled seamless steel pipe is quenched, and the quenched seamless steel pipe is tempered.

Method for manufacturing seamless steel pipe for line pipe and seamless steel pipe for line pipe

The chemical composition of a stainless steel in accordance with the present invention consists of C: not more than 0.05%, Si: not more than 0.5%, Mn: 0.01 to 0.5%, P: not more than 0.04%, S: not more than 0.01%, Cr: more than 16.0 and not more than 18.0%, Ni: more than 4.0 and not more than 5.6%, Mo: 1.6 to 4.0%, Cu: 1.5 to 3.0%, Al: 0.001 to 0.10%, and N: not more than 0.050%, the balance being Fe and impurities, and satisfies Formulas (1) and (2). Also, the micro-structure thereof contains a martensitic phase and a ferritic phase having a volume ratio of 10 to 40%, and the ferritic phase distribution ratio is higher than 85%.Cr+Cu+Ni+Mo&#x2267;25.5&#x2003;&#x2003;(1)&#x2212;8&#x2266;30(C+N)+0.5Mn+Ni+Cu/2+8.2&#x2212;1.1(Cr+Mo)&#x2266;&#x2212;4&#x2003;&#x2003;(2)

A martensitic stainless steel oil country tubular good contains, by mass, 0.005% to 0.1% C, 0.05% to 1% Si, 1.5% to 5% Mn, at most 0.05% P, at most 0.01% S, 9% to 13% Cr, at most 0.5% Ni, at most 2% Mo, at most 2% Cu, 0.001% to 0.1% Al, and 0.001% to 0.1% N, with the balance being Fe and impurities, and the pipe has a Cr-depleted region under the surface. The martensitic stainless steel oil country tubular good according to the present invention does not have a passive film on the surface and corrodes wholly at low speed. In addition, the Ni content is reduced, which allows uneven corrosion to be prevented. Therefore, SCC can be prevented from being generated in spite of the presence of a Cr-depleted region.

Martensitic stainless steel oil country tubular good

A steel pipe with excellent expandability, comprising, by mass %, C: 0.1 to 0.45%, Si: 0.3 to 3.5%, Mn: 0.5 to 5%, P: less than or equal to 0.03%, S: less than or equal to 0.01%, soluble Al: 0.01 to 0.8% (more than or equal to 0.1% in case Si content is less than 1.5%), N: less than or equal to 0.05%, O: less than or equal to 0.01%, and balance being Fe and impurities, having a mixed microstructure comprising ferrite and one or more selected from fine pearlite, bainite and martensite, and having a tensile strength of more than or equal to 600 MPa and a uniform elongation satisfying following formula (1). This steel pipe, having the above described chemical composition, can be obtained, for example, by being heated at temperatures from 700 to 790&#xb0; C., then being forced-cooled down to a temperature of lower than or equal to 100&#xb0; C. with the cooling rate of greater than or equal to 100&#xb0; C./min at the temperature from 700 to 500&#xb0; C.u-el&#x2267;28&#x2212;0.0075TS&#x2003;&#x2003;(1),

Method for producing steel pipe with excellent expandability

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Sanda, Japan

Kunio Kondo