JP2022550290A - セラミック電気発熱体用複合材料 - Google Patents
セラミック電気発熱体用複合材料 Download PDFInfo
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- JP2022550290A JP2022550290A JP2022518167A JP2022518167A JP2022550290A JP 2022550290 A JP2022550290 A JP 2022550290A JP 2022518167 A JP2022518167 A JP 2022518167A JP 2022518167 A JP2022518167 A JP 2022518167A JP 2022550290 A JP2022550290 A JP 2022550290A
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- Prior art keywords
- oxide
- composite material
- silicon nitride
- molybdenum disilicide
- silicon carbide
- Prior art date
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- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 239000000919 ceramic Substances 0.000 title claims abstract description 40
- 238000005485 electric heating Methods 0.000 title claims abstract description 31
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 89
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 48
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910021343 molybdenum disilicide Inorganic materials 0.000 claims abstract description 45
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 45
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims abstract description 45
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 45
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims description 9
- UZLYXNNZYFBAQO-UHFFFAOYSA-N oxygen(2-);ytterbium(3+) Chemical compound [O-2].[O-2].[O-2].[Yb+3].[Yb+3] UZLYXNNZYFBAQO-UHFFFAOYSA-N 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 229910003454 ytterbium oxide Inorganic materials 0.000 claims description 3
- 229940075624 ytterbium oxide Drugs 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000005266 casting Methods 0.000 description 8
- 238000005245 sintering Methods 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910020968 MoSi2 Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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- H05B3/148—Silicon, e.g. silicon carbide, magnesium silicide, heating transistors or diodes
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Abstract
Description
1.様々な抵抗温度係数(TCR)を得ることができ、TCR=-500といった数値だけでなく、TCR=5000という数値も達成可能なように、負の温度係数から正の温度係数まで任意の転換が可能であり、これと同時に、速い起動性、高耐熱性、耐腐食性、高強度などの、従来のセラミック材料の様々な性能の利点が確保されている。
2.小さな突入電流:抵抗温度係数(TCR)が大きいと、突入電流は小さくなり、抵抗温度係数(TCR)が小さくても、突入電流は小さくなる。負のTCRまたは小さいTCRであると、起動電流が小さくなるため、電源および制御部品の制御にかかるコストを大幅に削減できる可能性がある。このようにすれば、実際の使用に際し、電子制御部品に高いコストがかかり、その制御も難しいという従来のセラミック構造材が抱える問題を効率的に解決することができ、国際基準のセラミック構造体と同程度の性能指数を達成することができる。例えば、本開示による材料を使用することにより、過去に使用されていた100Wの電源を60Wの電源に置き換えて、電源容量の要件を緩和してもよい。
複合材料であって、該複合材料を製造するための素材が、窒化ケイ素(Si3N4)、二ケイ化モリブデン(MOSi2)、炭化ケイ素(SiC)、酸化イットリウム(Y2O3)、酸化アルミニウム(Al2O3)および酸化ランタン(La2O3)を含むことを特徴とする複合材料を提供する。ここで、窒化ケイ素、二ケイ化モリブデンおよび炭化ケイ素は機能性を有する主材料である。この複合材料を用いてセラミック電気発熱体を製造する場合、これらの主材料により、高温性能、発熱性能、導電率などを付与することができる。酸化アルミニウム、酸化イットリウムおよび酸化ランタンは補助材料であり、この複合材料を用いてセラミック電気発熱体を製造する場合、これらの補助材料により、主にセラミックの焼結を補助して室温および高温における強度を高め、高温耐酸化性などを向上させることができる。
窒化ケイ素、炭化ケイ素、二ケイ化モリブデン、酸化イットリウム、酸化ランタンおよび酸化アルミニウムの粉末を重量比に従って水と混合し、均一に攪拌して、容器に入れる。多層セラミック電気発熱体の様々な層に応じて様々な種類の混合スラリーを調製し、別々の容器に入れて準備しておく。
両端が開放された鋳込成形型を鋳込成形機に配置し、セラミックスラリー混合物を鋳込成形機に投入して、鋳込成形を開始する。鋳込成形は、セラミック電気発熱体が備える層の数に応じて段階的に実施し、外側層から内側層へと連続的に行う。
水分を失って乾燥したセラミック生材を鋳込成形型から取り出し、焼結金型に入れる。次に、セラミック生材を入れた焼結金型を焼結炉に入れ、2000~5000Kpaの圧力下、1400℃で7~12時間焼結を行う。
セラミック焼結体を焼結金型から取り出し、外形研削を行って、電極を取り付ける。
抵抗温度係数(TCR)が大きいと、突入電流は小さくなり、抵抗温度係数(TCR)が小さくても、突入電流は小さくなる。負のTCRまたは小さいTCRであると、起動電流が小さくなるため、電源および制御部品の制御にかかるコストを大幅に削減できる可能性がある。このようにすれば、実際の使用に際し、電子制御部品に高いコストがかかり、その制御も難しいという従来のセラミック構造材が抱える問題を効率的に解決することができ、国際基準のセラミック構造体と同程度の性能指数を達成することができる。
Claims (9)
- セラミック電気発熱体用の複合材料であって、該複合材料を製造するための素材が、窒化ケイ素、二ケイ化モリブデン、炭化ケイ素、酸化イットリウム、酸化アルミニウムおよび酸化ランタンを含む、複合材料。
- 窒化ケイ素:炭化ケイ素:二ケイ化モリブデン:酸化イットリウム:酸化ランタン:酸化アルミニウム=(200~900):(50~900):(500~2800):(40~100):(10~90):(5~80)の割合で製造される、請求項1に記載の複合材料。
- 窒化ケイ素:炭化ケイ素:二ケイ化モリブデン:酸化イットリウム:酸化ランタン:酸化アルミニウム=(300~800):(400~900):(800~2800):(40~100):(30~90):(5~80)の割合で製造される、請求項2に記載の複合材料。
- 窒化ケイ素:炭化ケイ素:二ケイ化モリブデン:酸化イットリウム:酸化ランタン:酸化アルミニウム=(400~900):(50~200):(500~800):(40~90):(30~80):(5~60)の割合で製造される、請求項2に記載の複合材料。
- 窒化ケイ素:炭化ケイ素:二ケイ化モリブデン:酸化イットリウム:酸化ランタン:酸化アルミニウム=(200~700):(100~700):(600~1500):(40~80):(10~70):(5~50)の割合で製造される、請求項2に記載の複合材料。
- 機能性を有する主材料として炭化タングステンをさらに含む、請求項1、2、3、4または5に記載の複合材料。
- 補助材料として酸化イッテルビウムをさらに含む、請求項1、2、3、4または5に記載の複合材料。
- 補助材料として酸化イッテルビウムをさらに含む、請求項6に記載の複合材料。
- 先行する請求項のいずれか1項に記載の複合材料を用いて製造されるセラミック電気発熱体。
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CN201910912107.6 | 2019-09-25 | ||
PCT/CN2020/114756 WO2021057512A1 (zh) | 2019-09-25 | 2020-09-11 | 一种用于陶瓷电热体的复合型材料 |
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CN114679801A (zh) * | 2022-03-30 | 2022-06-28 | 重庆利迈科技有限公司 | 一种全陶瓷发热体 |
CN116730724A (zh) * | 2023-05-05 | 2023-09-12 | 衡阳凯新特种材料科技有限公司 | 一种用于陶瓷探针的碳化硅复合陶瓷材料及其制备方法 |
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JPH08268760A (ja) * | 1995-02-02 | 1996-10-15 | Nippondenso Co Ltd | セラミックヒータ及びその製造方法 |
JPH1089222A (ja) * | 1996-09-11 | 1998-04-07 | Denso Corp | グロープラグ |
US20120145695A1 (en) * | 2010-12-09 | 2012-06-14 | Stephen Radmacher | Multi-layer ceramic heater and/or igniter and method for making the same |
JP2019021501A (ja) * | 2017-07-18 | 2019-02-07 | 日本特殊陶業株式会社 | セラミックヒータ、及びグロープラグ |
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CN110590371A (zh) | 2019-12-20 |
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