Daido Steel Co., Ltd.

An electrode active material including: a powder material that contains a Si phase composed of Si in which an element X is dissolved and a SiX compound phase composed of a compound of Si and the element X, in which the powder material has a cumulative 50% particle diameter D50 of 0.1 μm or more and 1.0 μm or less and a cumulative 99% particle diameter D99 of 3.0 μm or less, and the element X is at least one selected from Fe, Ti, Cr, Mn, Co, Ni, Zr, B, and P.

The present invention relates to a lithium ion battery negative electrode active material that includes an Si phase, an Si—Zr compound phase, an Si—X compound phase, and an Sn—Cu compound phase, X being at least one element selected from the group that consists of Fe, Ni, Co, Mn, Ti, V, and Cr, the Sn—Cu compound phase fraction of the whole being 0.1-18 mass %, and the Si phase fraction being 10-90 mass %.

The present invention aims to provide an electromagnetic wave-absorbing composition comprising a thermoplastic resin or a thermoplastic elastomer, exhibiting electromagnetic wave absorption performance, and suppressing an increase in fluidity when heated. The composition of the present invention comprises a component (A) that is at least one selected from a thermoplastic resin and a thermoplastic elastomer and a component (B) that is a Fe—Cr—Si-based soft-magnetic metal powder at a mass ratio (component (A)/component (B)) in a range of 5/95 to 80/20, further comprises a component (C) that is at least one selected from a phosphite-based compound and a phosphate-based compound in an amount of 0.02 to 1.4 parts by mass relative to 100 parts by mass in total of the component (A) and the component (B), and has an electromagnetic wave absorption energy P at 79 GHz of 5 kW/m 3 or more.

The present invention relates to an additive manufacturing wire, containing, in terms of % by mass, 0%<Si≤2.0%, 0%<Mn≤6.0%, 3.0%≤Ni≤15.0%, 20.0%≤Cr≤30.0%, 1.0%≤Mo≤5.0%, 0%<N≤0.50%, with a balance being Fe and unavoidable impurities, in which C≤0.10% is satisfied, and 27<A<67 is satisfied, when Cr eq is defined as Cr+Mo+1.5Si+0.5(Nb+W)+2(Ti+Al), Ni eq is defined as Ni+30C+20N+0.5(Mn+Cu+Co), and A is defined as −16.2+6.3Cr eq −9.3Ni eq , here, in the definition of Cr eq and Ni eq , each element symbol indicates a content of the each element in units of % by mass.

The present invention relates to a case-hardening steel containing: 0.10 mass %≤C≤0.20 mass %, 0.05 mass %≤Si≤2.00 mass %, 0.30 mass %≤Mn≤2.00 mass %, P≤0.030 mass %, S≤0.030 mass %, 0.01 mass %≤Cu≤1.00 mass %, 0.01 mass %≤Ni≤1.00 mass %, 0.30 mass %≤Cr≤3.00 mass %, 0.0001 mass %≤Ti≤0.2000 mass %, 0.040 mass %≤Nb≤0.080 mass %, 0.002 mass %≤Al≤0.060 mass %, and 0.003 mass %≤N≤0.040 mass %, with the balance being Fe and inevitable impurities, and satisfying Pinning Nb Content ≥0.020 mass %, and 2.0×10 −6 ≤[Ti]×[N]≤2.0×10 −3 .

The present invention relates to a radiant tube heater including: a tube provided with openings at both ends; a first cover body and a second cover body configured to close the openings at both ends; at least one electric resistance heating element provided in the tube; a support member provided in the tube and configured to support the electric resistance heating element; a gas inlet configured to allow furnace cooling gas to be introduced into the tube; and a gas outlet configured to discharge the furnace cooling gas introduced into the tube.

The present invention relates to a non-magnetic austenitic stainless steel material having a component composition containing, in terms of mass percent, C: <0.10%, Si: <0.3%, Mn: more than 4.5% to less than 10.0%, P: <0.05%, S: <0.0020%, Ni: 9.0% to 15.0%, Cr: 17.0% to 25.0%, Mo: 3.0% to 7.0%, and N: 0.3% to 0.6%, with the balance being Fe and unavoidable impurities; satisfying (40[N]+1.2[Cr]+0.07exp(0.3[Ni]+0.3[Cu]))×1.5[Mo]{circumflex over ( )}(−0.18)≤60, in which [M] represents a content of an element M in terms of mass %; having an austenite single phase structure; having a critical pitting temperature of 50° C. or higher; and having a 0.2% proof stress of 970 MPa or more.

The present invention relates to a low thermal expansion alloy, consisting of: 0.10 to 0.40 mass % of C; up to 1.00 mass % of Si; 0.10 to 2.00 mass % of Mn; up to 0.050 mass % of P; up to 0.015 mass % of S; 0.10 to 4.00 mass % of Cu; 35.0 to 45.0 mass % of Ni; 0.10 to 1.00 mass % of V; up to 4.00 mass % of Mo; each up to 0.50 mass % of Cr, Co, Al, Ti, Nb, W, Zr, Hf, and Ta; and each up to 0.050 mass % of B, Mg, Ca, and REM, with the balance being Fe and unavoidable impurities. The low thermal expansion alloy satisfies A≥38.0 and 40.6<B≤44.5. Here, A and B are defined in the description.

An electromagnetic wave absorber evaluation apparatus including: a housing in which the electromagnetic wave absorber is allowed to be arranged, the housing being made of a conductive material with inner dimensions of a width a, a height b, and a length L, as b<a<L; a substrate arranged inside the housing; an input microstrip line and an output microstrip line formed on the substrate along a length direction of the housing and separated from each other in the length direction; and a signal inspecting unit capable of inputting an input signal having a frequency of 20 GHz or more into the input microstrip line and detecting an output signal output through the output microstrip line, in which an evaluation frequency f t obtained by the Formula (1) satisfies the Formula (2) in a frequency region of 20 GHz or more.

The present invention relates to a negative electrode active material including: Si particles; first particles; and second particles, in which the first particles have a volume expansion rate due to Li occlusion of 0% to 80%, and the second particles have a volume expansion rate due to Li occlusion of 100% to 300%.