M
Masaya Nakamura
Researcher at Denso
Publications - 61
Citations - 5022
Masaya Nakamura is an academic researcher from Denso. The author has contributed to research in topics: Ceramic & Piezoelectricity. The author has an hindex of 9, co-authored 61 publications receiving 4627 citations. Previous affiliations of Masaya Nakamura include Toyota & Kyoto University.
Papers
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Lead-free piezoceramics
Yasuyoshi Saito,Hisaaki Takao,Toshihiko Tani,Tatsuhiko Nonoyama,Kazumasa Takatori,Takahiko Homma,Toshiatsu Nagaya,Masaya Nakamura +7 more
TL;DR: A lead-free piezoelectric ceramic with an electric-field-induced strain comparable to typical actuator-grade PZT is reported, achieved through the combination of the discovery of a morphotropic phase boundary in an alkaline niobate-based perovskite solid solution, and the development of a processing route leading to highly textured polycrystals.
Patent
Crystal oriented ceramics and production method of same
Tatsuhiko Nonoyama,Toshiatsu Nagaya,Hisaaki Takao,Takahiko Homma,Yasuyoshi Saito,Kazumasa Takatori,Masaya Nakamura +6 more
TL;DR: In this paper, the authors presented a crystal oriented ceramics, which are composed of a polycrystalline substance of an isotropic perovskite compound represented by the general formula: {Li x (K 1-y Na y ) 1-x }{Nb 1-z-w Ta z Sb w }O 3 (wherein, 0 ≤ x ≤ 0.2, y ≤ 1, x + z + w > 0).
Patent
Grain oriented ceramics and production method thereof
Hisaaki Takao,Takahiko Homma,Yasuyoshi Saito,Kazumasa Takatori,Tatsuhiko Nonoyama,Toshiatsu Nagaya,Masaya Nakamura +6 more
TL;DR: In this paper, a grain oriented perovskite-type compound is represented by formula (1): {Lix(K1−yNay)1−x}(Nb1−z−wTazSbw)O3 in which x, y, z and w are in respective composition ranges of 0.0001 to 0.15 mol of any one or more additional element selected from metal elements, semimetal elements, transition metal elements and noble metal elements belonging to Groups 2 to 15 of the Periodic Table.
Patent
Crystallographic orientation ceramic, and its manufacturing method
尚史 ▲高▼尾,Takahiko Honma,Toshiatsu Nagaya,Masaya Nakamura,Tatsuhiko Nonoyama,Yasuyoshi Saito,Hisafumi Takao,Kazumasa Takatori,雅也 中村,隆彦 本間,龍彦 野々山,年厚 長屋,一雅 鷹取,康善 齋藤 +13 more
TL;DR: In this paper, the main phase consists of a polycrystal containing one or more kinds of additive elements of 0.0001-0.15 mol selected from among a metallic element belonging to group II-XV in the periodic table, a metalloid element, a transition metal element and an alkaline earth metal element to a compound represented by general formula (1) of 1 mol.
Patent
Production method of polycrystalline ceramic body
Masaya Nakamura,Toshiatsu Nagaya,Tatsuhiko Nonoyama,Hisaaki Takao,Yasuyoshi Saito,Takahiko Homma,Kazumasa Takatori +6 more
TL;DR: In this article, a polycrystalline ceramic body with excellent density is produced by using a mixture of coarse particle ceramic powder and fine particle powder, and a heat-treating step is performed.