Canon Kabushiki Kaisha

Fuji Chemical Company, Limited

Canon Kabushiki Kaha

Kanako Oshima

Makoto Kubota

Hisato Yabuta

Nobuhiro Yasui

Takanori Matsuda

Jumpei Hayashi

Koji Suzuki

Tatsuo Furuta

Shunsuke Murakami

Yasushi Shimizu

Akira Uebayashi

Yoshihiro Ohashi

Hidenori Tanaka

Shinya Koyama

Kenji Maeda

Yoshinori Kotani

Akira Tsuboyama

Hiroshi Saito

Fumio Uchida

Tatsuya Suzuki

Hideaki Takahashi

Takayuki Watanabe

Miki Ueda

Kaoru Miura

Chiemi Shimizu

Hiroki Imai

Mikio Shimada

Satoshi Fujita

Masatoshi Watanabe

Tomohiro Watanabe

Yuki Iitsuka

Chiaki Arii

To achieve local melting of an inorganic material powder containing an inorganic material as a main component in an additive manufacturing technology, to thereby achieve high shaping accuracy. Provided is an inorganic material powder to be used in an additive manufacturing method involving performing shaping through irradiation with laser light, the inorganic material powder including: a base material that is an inorganic material; and an absorber, wherein the absorber has a higher light-absorbing ability than the base material for light having a wavelength included in the laser light, and contains any one of TiO, TiO, SiO, ZnO, antimony-doped tin oxide (ATO), and indium-doped tin oxide (ITO), or contains any one of a transition metal carbide, a transition metal nitride, SiN, AlN, a boride, and a silicide.

Inorganic material powder and method of manufacturing a structural body

Provided are a method of manufacturing a ceramic article in which the improvement of mechanical strength, wear resistance, and machinability is achieved using a direct modeling system, and a ceramic article. The manufacturing method includes the steps of: (i) arranging powder containing ceramics as a main component on a base; (ii) irradiating a part or an entirety of the arranged powder with an energy beam to melt and solidify the powder, to thereby obtain an intermediate modeled article; (iii) causing the modeled article to absorb a metal component-containing liquid to impregnate the modeled article therewith; and (iv) subjecting the modeled article having absorbed the metal component-containing liquid to heat treatment.

Ceramics product manufacturing method and ceramics product

A method for manufacturing a ceramic article including (i) a step of irradiating a powder mainly containing a ceramic material with an energy beam to sinter or melt and solidify the powder into a solidified portion, wherein the step is repeated a predetermined number of times to sequentially bond the resulting solidified portions together to obtain a ceramic modeling object, (ii) a step of allowing the shaped ceramic object to absorb a metal component-containing liquid that contains inorganic particles containing a metal element; and (iii) a step of heating the shaped ceramic object that has absorbed the metal component-containing liquid.

Method for manufacturing ceramic article, metal component-containing liquid, kit for manufacturing ceramic article, and ceramic article

Provided are a method of manufacturing a ceramic article including a porous portion in which improvement in mechanical strength of a modeled article is achieved while high modeling accuracy is obtained, and a ceramic article. The method of manufacturing a ceramic article includes the steps of: (i) irradiating powder of a metal oxide containing aluminum oxide as a main component with an energy beam based on modeling data to melt and solidify or sinter the powder, to thereby form a modeled article including a porous portion; (ii) causing the modeled article formed in the step (i) to absorb a liquid containing a zirconium component; and (iii) heating the modeled article that has absorbed the liquid containing the zirconium component, wherein, in the absorbing step, the liquid is absorbed so that a ratio of the zirconium component in a metal component contained in the porous portion becomes 0.3 to 2.0 mol %.

Ceramic article production method and ceramic article

A method of producing a ceramic manufactured object including (i) a step of leveling a ceramic powder to form a powder layer, (ii) a step of irradiating the powder layer with a laser beam based on three-dimensional data to crystallize an irradiated site, and (iii) performing the steps (i) and (ii) in repetition, wherein in the step (ii), a surface of the powder layer is irradiated with the laser beam in an unfocused state.

Method of producing ceramic manufactured object

A casting core containing a ceramic and having sufficient mechanical strength to withstand a casting process over a long period of time and good solubility in alkaline solutions. The casting core includes a core, a surface layer, and an intermediate layer between the core and the surface layer. The intermediate layer has a lower relative density than the surface layer and the core.

Casting core containing ceramic and method for manufacturing cast article using the same

Provided are a powder for laser manufacturing which can be stably manufactured and from which a three-dimensional manufactured object ensuring a manufacturing accuracy can be obtained and a using method thereof. A powder for ceramic manufacturing for obtaining a manufactured object by repeatedly sintering or fusing and solidifying in sequence a powder in an irradiation portion with laser light, in which the powder includes a plurality of compositions, at least one composition of the compositions is an absorber that relatively strongly absorbs the laser light compared to other compositions, and at least a part of the absorber changes to a different composition that relatively weakly absorbs the laser light by irradiation with the laser light and a using method of a powder in which the powder is used.

Powder for ceramic manufacturing, ceramic manufactured object, and manufacturing method thereof

An article including an inorganic compound according to the present invention includes a porous part and a no-porous frame body surrounding the porous part in a plane direction, and includes a stress relaxation part between the porous part and the frame body.

Article including inorganic compound and method of manufacturing article including inorganic compound

A piezoelectric material includes: an oxide containing Na, Ba, Nb, Ti, and Mn, in which the oxide has a perovskite-type structure, a total amount of metal elements other than Na, Ba, Nb, Ti, and Mn contained in the piezoelectric material is 0.5 mol % or less with respect to a total amount of Na, Ba, Nb, Ti, and Mn, a molar ratio x of Ti to a total molar amount of Nb and Ti is 0.05&#x2264;x&#x2264;0.12, a molar ratio y of Na to Nb is 0.93&#x2264;y&#x2264;0.98, a molar ratio z of Ba to Ti is 1.09&#x2264;z&#x2264;1.60, a molar ratio m of Mn to the total molar amount of Nb and Ti is 0.0006&#x2264;m&#x2264;0.0030, and 1.07&#x2264;y&#xd7;z&#x2264;1.50 is satisfied.

Piezoelectric material, piezoelectric element, and electronic equipment

Provided is a method of producing a manufactured object including forming the manufactured object by performing, once or a plurality of times, a step of forming a powder layer from material powders containing powders of an inorganic compound and a step of irradiating a predetermined region of a surface of the powder layer with an energy beam and thereby fusing/solidifying the material powders. In the step of fusing/solidifying the material powders, an amorphous-rich region and a crystalline-rich region are formed separately by changing at least one of an output of the energy beam, a relative position between the surface of the powder layer and a focus of the energy beam, and a scanning rate.

Method of producing manufactured object and manufactured object

Provided is a piezoelectric ceramics including crystal grains each including: a first region that is formed of a perovskite-type metal oxide having a crystal structure in which a central element of a unit cell is located at an asymmetrical position; and a second region that is formed of a perovskite-type metal oxide having a crystal structure in which a central element of a unit cell is located at a symmetrical position, and that is present inside the first region, wherein a ratio of a cross-sectional area of the second region to a cross-sectional area of the piezoelectric ceramics is 0.1% or less.

Piezoelectric ceramics, piezoelectric element, and electronic apparatus

Provided is a piezoelectric ceramics having a gradual change in piezoelectric constant depending on an ambient temperature. Specifically, provided is a single-piece piezoelectric ceramics including as a main component a perovskite-type metal oxide represented by a compositional formula of ABO, wherein an A site element in the compositional formula contains Ba and M, the Mbeing formed of at least one kind selected from the group consisting of Ca and Bi, wherein a B site element in the compositional formula contains Tand M, the Mbeing formed of at least one kind selected from the group consisting of Zr, Sn, and Hf, wherein concentrations of the Mand the Mchange in at least one direction of the piezoelectric ceramics, and wherein increase and decrease directions of concentration changes of the Mand the Mare directions opposite to each other.

Piezoelectric ceramics, manufacturing method for piezoelectric ceramics, piezoelectric element, vibration device, and electronic device

A lead-free piezoelectric material includes perovskite-type metal oxide containing Na, Nb, Ba, Ti, and Mg and indicates excellent piezoelectric properties. The piezoelectric material satisfies the following relational expression (1): 0.430&#x2264;a&#x2264;0.460, 0.433&#x2264;b&#x2264;0.479, 0.040&#x2264;c&#x2264;0.070, 0.0125&#x2264;d&#x2264;0.0650, 0.0015&#x2264;e&#x2264;0.0092, 0.9&#xd7;3e&#x2264;c&#x2212;d&#x2264;1.1&#xd7;3e, a+b+c+d+e=1, where a, b, c, d, and e denote the relative numbers of Na, Nb, Ba, Ti, and Mg atoms, respectively.

Growing community of inventors

Tokyo, Japan

Kanako Oshima