JP6267788B2 - 電磁波吸収材料及びその調製方法 - Google Patents
電磁波吸収材料及びその調製方法 Download PDFInfo
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- JP6267788B2 JP6267788B2 JP2016516860A JP2016516860A JP6267788B2 JP 6267788 B2 JP6267788 B2 JP 6267788B2 JP 2016516860 A JP2016516860 A JP 2016516860A JP 2016516860 A JP2016516860 A JP 2016516860A JP 6267788 B2 JP6267788 B2 JP 6267788B2
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- 239000011358 absorbing material Substances 0.000 title claims description 53
- 238000000034 method Methods 0.000 title claims description 26
- 238000005245 sintering Methods 0.000 claims description 38
- 239000000203 mixture Substances 0.000 claims description 37
- 239000000843 powder Substances 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 238000010298 pulverizing process Methods 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 4
- 238000001238 wet grinding Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 230000035699 permeability Effects 0.000 description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 11
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- 239000000395 magnesium oxide Substances 0.000 description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910017518 Cu Zn Inorganic materials 0.000 description 2
- 229910017752 Cu-Zn Inorganic materials 0.000 description 2
- 229910017943 Cu—Zn Inorganic materials 0.000 description 2
- 229910018619 Si-Fe Inorganic materials 0.000 description 2
- 229910008289 Si—Fe Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- -1 lanthanide metal oxide Chemical class 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
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Description
本願は、2013年9月25日に中華人民共和国国家知識産権局に出願された中国特許出願第201310441214.8号の優先権及び利益を主張し、これらの全文を参照により本明細書に援用する。
本実施形態E1は、波吸収材料及び前記波吸収材料を調製する方法を提供する。
波吸収材料A2〜A7を調製する方法は、対応する波吸収材料の含有量が異なり、表1に記載されている通りであることを除いて、実施形態1と実質的に同様である。
波吸収材料CA1〜CA3を調製する方法は、対応する波吸収材料の含有量が異なり、表1に記載されている通りであることを除いて、実施形態1と実質的に同様である。
波吸収材料CA4は、中国特許公開第102211929号明細書の実施形態1に従って調製した。
1)初期透磁率
初期透磁率は、Aglient Technologies,Inc,USから市販されているHP4284Aインピーダンスアナライザー及び専用フィクスチャ16454Aを用いて試験した。試験する予焼結粉末を、プレス成形によって円柱状に成形した。前記円柱の外径は20mm、内径は5mm、高さは8mmであった。前記円柱を1回巻きコイルとみなした。前記コイルのインピーダンスを検出することによってコイルのインダクタンスを得、次いで、試験した材料の初期透磁率を計算することができる。試験周波数は、100kHzであった。結果を表2に示す。
抵抗率は、Semilab社から市販されているRT−100抵抗率計を用いて試験した。試験する粉末を、長さ20mm〜25mm、断面対角線長10mm〜15mmの立方体状に成形した。前記立方体を抵抗率計で試験し、次いで、マニュアルに従って抵抗率を計算した。結果を表2に示す。
Claims (15)
- Fe2O3、MnO、ZnO、及びMgOのうちの少なくとも1つを含む主組成物と、
CeO2及びP2O5のうちの少なくとも1つを含む、CeO2のP2O5に対するモル比が1:1〜2:1である補助組成物と、
焼結添加剤と
を含み、
電磁波吸収材料の総モル量に基づいて、Fe 2 O 3 の含有量が40モル%〜54モル%であり、MnOの含有量が12モル%〜20モル%であり、ZnOの含有量が22モル%〜25モル%であり、MgOの含有量が5モル%〜10モル%であり、CeO 2 の含有量が0.1モル%〜3.5モル%であり、P 2 O 5 の含有量が0.1モル%〜2.5モル%であり、
前記焼結添加剤の含有量が0.2モル%〜3.5モル%である
ことを特徴とする電磁波吸収材料。 - Fe 2 O 3 、MnO、ZnO、及びMgOのうちの少なくとも1つを含む主組成物と、
CeO 2 及びP 2 O 5 のうちの少なくとも1つを含む、CeO 2 のP 2 O 5 に対するモル比が1:1〜2:1である補助組成物と、
焼結添加剤と
を含み、
電磁波吸収材料の総モル量に基づいて、Fe 2 O 3 の含有量が45モル%〜50モル%であり、MnOの含有量が13モル%〜16モル%であり、ZnOの含有量が22モル%〜25モル%であり、MgOの含有量が5モル%〜10モル%であり、CeO 2 の含有量が1.5モル%〜3.0モル%であり、P 2 O 5 の含有量が1モル%〜2モル%であり、
前記焼結添加剤の含有量が0.2モル%〜3.5モル%である
ことを特徴とする電磁波吸収材料。 - 前記焼結添加剤が、Nb 2 O 5 、MoO 3 、Bi 2 O 3 、V 2 O 5 、及びSiO 2 からなる群から選択される少なくとも1つである請求項1または2に記載の電磁波吸収材料。
- 前記電磁波吸収材料の総モル量に基づいて、Nb 2 O 5 の含有量が0.1モル%〜2.5モル%であり、MoO 3 の含有量が0.1モル%〜1.5モル%であり、Bi 2 O 3 の含有量が0.2モル%〜1.5モル%であり、V 2 O 5 の含有量が0.1モル%〜1.5モル%であり、SiO 2 の含有量が0.2モル%〜2.5モル%である請求項3に記載の電磁波吸収材料。
- 請求項1から4のいずれかに記載の電磁波吸収材料を調製する方法であって、
主組成物及び焼結添加剤を含む混合物を提供する工程と、
前記混合物を溶媒及び分散剤と共に第1の粉砕及び第1の焼結に付して第1の粉末を形成する工程と、
前記第1の粉末をCeO 2 及びP 2 O 5 と共に第2の粉砕に付して第2の粉末を形成する工程と、
前記第2の粉末を成形及び第2の焼結に付す工程と
を含むことを特徴とする方法。 - 前記第1の粉砕が、湿式粉砕によって実施される請求項5に記載の方法。
- 前記第2の粉砕が、ボールミル粉砕によって実施される請求項5または6に記載の方法。
- 前記第1の粉砕が、400r/分〜450r/分の粉砕速度で8時間〜12時間実施される請求項5から7のいずれかに記載の方法。
- 前記第1の焼結が、
前記第1の粉砕工程から得られる粉砕生成物を3℃/分〜5℃/分の昇温速度で700℃〜950℃の温度に加熱する第1の加熱と、
前記第1の加熱工程から得られる加熱生成物を700℃〜950℃の温度で1時間〜4時間維持することと
を含む請求項5から8のいずれかに記載の方法。 - 前記第2の粉砕が、300r/分〜450r/分の粉砕速度で4時間〜10時間実施される請求項5から9のいずれかに記載の方法。
- 前記成形が、ブレード鋳造、コーティング、プレス成形、及び射出成形のうちの少なくとも1つによって実施される請求項5から10のいずれかに記載の方法。
- 前記第2の焼結が、
前記第1の焼結工程から得られる焼結生成物を0.5℃/分〜3℃/分の昇温速度で1,000℃〜1,150℃の温度に加熱する第2の加熱と、
前記第2の加熱工程から得られる加熱生成物を1,000℃〜1,150℃の温度で2時間〜4時間維持することと
を含む請求項5から11のいずれかに記載の方法。 - 前記成形工程の前に、前記第2の粉末を篩分けすることを更に含む請求項5から12のいずれかに記載の方法。
- 前記第1の焼結工程の前に、前記第1の粉砕工程から得られる粉砕生成物を乾燥させることを更に含む請求項5から13のいずれかに記載の方法。
- 前記乾燥が、60℃〜80℃の温度で10時間〜20時間実施される請求項14に記載の方法。
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