Patents by Inventor YaoCan Zhu
YaoCan Zhu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10688565Abstract: In an embodiment, a cutting tool is disclosed. The cutting tool includes a base member and a DLC layer. The DLS layer contains diamond-like carbon and is located on a surface of the base member. The DLC layer includes one or more first regions. Each of the one or more first regions contains argon by 0.1-1 mass %.Type: GrantFiled: May 30, 2016Date of Patent: June 23, 2020Assignee: KYOCERA CORPORATIONInventors: Satoshi Mori, Yaocan Zhu
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Publication number: 20180147635Abstract: In an embodiment, a cutting tool is disclosed. The cutting tool includes a base member and a DLC layer. The DLS layer contains diamond-like carbon and is located on a surface of the base member. The DLC layer includes one or more first regions. Each of the one or more first regions contains argon by 0.1-1 mass %.Type: ApplicationFiled: May 30, 2016Publication date: May 31, 2018Inventors: Satoshi Mori, Yaocan Zhu
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Patent number: 9555476Abstract: Problem: To provide a cutting tool that exhibits superior chipping resistance and wear resistance. Resolution means: A cutting tool 1 is provided with a base 2, and a coating layer 6 comprising columnar crystals 7 that cover the surface of the base 2. A Cutting edge 5 is formed at the crossing ridge line of a rake face 3 and a flank face 4. The average inclination angle (?2) of the flank face 4, in the longitudinal direction of the columnar crystals 7 with respect to the direction orthogonal to the surface of the base 2, is greater than the average inclination angle (?1) of the rake face 3, in the longitudinal direction of the columnar crystals 7 with respect to the direction orthogonal to the surface of the base 2.Type: GrantFiled: February 20, 2014Date of Patent: January 31, 2017Assignee: KYOCERA CORPORATIONInventor: Yaocan Zhu
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Publication number: 20160001374Abstract: Problem: To provide a cutting tool that exhibits superior chipping resistance and wear resistance. Resolution means: A cutting tool 1 is provided with a base 2, and a coating layer 6 comprising columnar crystals 7 that cover the surface of the base 2. A Cutting edge 5 is formed at the crossing ridge line of a rake face 3 and a flank face 4. The average inclination angle (?2) of the flank face 4, in the longitudinal direction of the columnar crystals 7 with respect to the direction orthogonal to the surface of the base 2, is greater than the average inclination angle (?1) of the rake face 3, in the longitudinal direction of the columnar crystals 7 with respect to the direction orthogonal to the surface of the base 2.Type: ApplicationFiled: February 20, 2014Publication date: January 7, 2016Inventor: Yaocan ZHU
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Patent number: 9085032Abstract: A cutting tool including a base member and a coating layer. The base member includes a rake face and a flank face. The coating layer has a composition represented by a first chemical formula of CraM1-a(C1-xNx), wherein M represents at least one selected from Ti, Al, Si, W, Mo, Ta, Hf, Nb, Zr, and Y, 0.01?a?0.5, and 0?x?1. The coating layer is disposed on the base member and includes a cutting edge at an intersecting ridge line between the rake face and the flank face. The coating layer further comprises droplets thereon. An average composition of the droplets disposed on the rake face has a Cr content higher than the Cr content of the average composition of the droplets disposed on the flank face.Type: GrantFiled: July 25, 2012Date of Patent: July 21, 2015Assignee: KYOCERA CORPORATIONInventors: Yoshiki Sakamoto, Masahiro Waki, Yaocan Zhu
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Publication number: 20140271000Abstract: A cutting tool including a base member and a coating layer. The base member includes a rake face and a flank face. The coating layer has a composition represented by a first chemical formula of CraM1-a(C1-xNx), wherein M represents at least one selected from Ti, Al, Si, W, Mo, Ta, Hf, Nb, Zr, and Y, 0.01?a?0.5, and 0?x?1. The coating layer is disposed on the base member and includes a cutting edge at an intersecting ridge line between the rake face and the flank face. The coating layer further comprises droplets thereon. An average composition of the droplets disposed on the rake face has a Cr content higher than the Cr content of the average composition of the droplets disposed on the flank face.Type: ApplicationFiled: July 25, 2012Publication date: September 18, 2014Applicant: Kyocera CorporationInventors: Yoshiki Sakamoto, Masahiro Waki, Yaocan Zhu
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Patent number: 8691366Abstract: A cutting tool with a substrate which is coated with a coating layer containing TiaAlbNbdMe(C1-xNx), where M represents one or more elements selected from among Si, W, Mo, Ta, Hf, Cr, Zr and Y, where 0.1?a?0.7, 0?b?0.8, 0.02?d?0.25, 0?e?25, a+b+d+e=1.0 and 0?x?1 and is provided with a rake face; a flank face; a cutting edge between the rake face and the flank face; and droplets on the surface of the coating layer. The droplets include finer droplets having particle diameters of 300 nm or less; and coarser droplets having particle diameters of 1000 nm or more. The flank face has a higher percentage of the finer droplets than the rake face. An Nb content in the coarser droplets on the flank face is higher than an Nb of the coarser droplets on the rake face.Type: GrantFiled: May 27, 2011Date of Patent: April 8, 2014Assignee: Kyocera CorporationInventors: Masahiro Waki, Yaocan Zhu
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Publication number: 20130071620Abstract: A cutting tool with a substrate which is coated with a coating layer containing TiaAlbNbdMe(C1-xNx), where M represents one or more elements selected from among Si, W, Mo, Ta, Hf, Cr, Zr and Y, where 0.1?a?0.7, 0?b?0.8, 0.02?d?0.25, 0?e?25, a+b+d+e=1.0 and 0?x?1 and is provided with a rake face; a flank face; a cutting edge between the rake face and the flank face; and droplets on the surface of the coating layer. The droplets include finer droplets having particle diameters of 300 nm or less; and coarser droplets having particle diameters of 1000 nm or more. The flank face has a higher percentage of the finer droplets than the rake face. An Nb content in the coarser droplets on the flank face is higher than an Nb of the coarser droplets on the rake face.Type: ApplicationFiled: May 27, 2011Publication date: March 21, 2013Applicant: KYOCERA CORPORATIONInventors: Masahiro Waki, Yaocan Zhu
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Patent number: 8236411Abstract: An object of embodiments according to the invention is to provide a cutting tool having good wear resistance, good sliding property and good fracture resistance. A cutting tool 1 comprising a substrate 2 and a coating layer 6 or a coating layer 9 which covers a surface of the substrate 2. The coating layer 6 or the coating layer 9 comprising a first layer 7 and a second layer 8. The first layer 7 comprises Ti1-a-b-c-dAlaWbSicMd(C1-xNx) when M is at least one selected from Nb, Mo, Hf and Y, 0.45?a?0.55, 0.01?b?0.1, 0?c?0.05, 0.01?d?0.1, 0?x?1). The second layer 8 comprises Ti1-e-f-gAleSifM?g(C1-yNy) when M? is at least one selected from Nb, Mo, Ta, Hf and Y, 0.50?e?0.60, 0?f?0.1, 0.05?g?0.15, 0?y?1).Type: GrantFiled: March 25, 2009Date of Patent: August 7, 2012Assignee: Kyocera CorporationInventors: Masahiro Waki, Tatsuyuki Nakaoka, Shuichi Tateno, Takashi Watanabe, Kenji Noda, Takahiko Makino, YaoCan Zhu
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Patent number: 7811683Abstract: A cutting tool having a substrate and a coating layer for coating the surface of the substrate, the coating layer being composed of Ti1?a?b?c?dAlaWbSicMd(CxN1?x), where M is at least one selected from Nb, Mo, Ta, Hf and Y, 0.45?a?0.55, 0.01?b?0.1, 0.01?c?0.05, 0.01?d?0.1, and 0?x?1. The cutting tool has excellent wear resistance and fracture resistance. The cutting tool may be further provided with a layer composed of at least one selected from carbides, nitrides and carbonitrides of Al and the elements of the groups 4, 5 and 6 of the periodic table.Type: GrantFiled: September 27, 2007Date of Patent: October 12, 2010Assignee: Kyocera CorporationInventors: YaoCan Zhu, Hideyoshi Kinoshita, Takashi Tokunaga, Kenji Noda, Tatsuyuki Nakaoka
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Publication number: 20090130434Abstract: A surface coated tool including a substrate, and stacked layers composed of two coating layers represented by the following general formula (1) on the substrate is provided. A first coating layer to be coated on the surface of the substrate, which has a thickness of 0.1 to 1 ?m, is composed of a granular crystal having a mean crystal diameter of 0.01 to 0.1 ?m. A second coating layer to be coated on the surface of the first coating layer, which has a thickness of 0.5 to 5 ?m, is composed of columnar crystal grown in a direction perpendicular to the substrate, and the columnar crystal has a mean crystal width of 0.05 to 0.3 ?m in a direction parallel to the substrate while a mean crystal width thereof is larger than the mean crystal diameter of the first coating layer.Type: ApplicationFiled: March 26, 2007Publication date: May 21, 2009Applicant: KYOCERA CORPORATIONInventors: Yaocan Zhu, Kenji Noda, Masahito Matsuzawa
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Publication number: 20080075543Abstract: A cutting tool having a substrate and a coating layer for coating the surface of the substrate, the coating layer being composed of Ti1-a-b-c-dAlaWbSicMd(CxN1-x) where M is at least one selected from Nb, Mo, Ta, Hf and Y, 0.45?a?0.55, 0.01?b?0.1, 0.01?c?0.05, 0.01?d?0.1, and 0?x?1. The cutting tool has excellent wear resistance and fracture resistance. The cutting tool may be further provided with a layer composed of at least one selected from carbides, nitrides and carbonitrides of Al and the elements of the groups 4, 5 and 6 of the periodic table.Type: ApplicationFiled: September 27, 2007Publication date: March 27, 2008Applicant: Kyocera CorporationInventors: YaoCan Zhu, Hideyoshi Kinoshita, Takashi Tokunaga, Kenji Noda, Tatsuyuki Nakaoka