發(fā)布時(shí)間：2018-04-26 04:01

  本文選題：合金鋼 + 鐵基非晶�。� 參考：《鄭州大學(xué)》2017年碩士論文

【摘要】：Fe基非晶軟磁材料具有高飽和磁感應(yīng)強(qiáng)度(Bs)、高磁導(dǎo)率(μe)和低矯頑力(Hc)等優(yōu)異的綜合軟磁性能,是一種很有應(yīng)用前景的新型磁性材料。目前,鋼鐵產(chǎn)能過(guò)剩,在國(guó)內(nèi)去產(chǎn)能,加快發(fā)展新材料的大背景下,本文針對(duì)中合金鋼成分特點(diǎn)開(kāi)發(fā)出新型Fe基非晶軟磁合金,同時(shí)考察了Ni、Cr和Co三種典型合金元素對(duì)非晶合金軟磁性能的影響。在此基礎(chǔ)之上,選用綜合軟磁性能優(yōu)異的新型非晶帶材制成非晶粉末,探索新型非晶磁粉芯的制備工藝,以期拓寬其應(yīng)用。圍繞這一課題本文主要展開(kāi)以下幾方面的研究工作:(1)利用合金鋼開(kāi)發(fā)出新型非晶合金,并研究了其軟磁性能。在合金鋼Fe_(92.27)_(1.43)C_(0.14)Mn_(0.58)P_(0.15)Cu_(0.03)Mo_(0.01)Ni_(1.51)Cr_(3.75)Co_(0.13)(at%,標(biāo)注為S0)的成分基礎(chǔ)上,以目前廣泛使用的鐵基非晶合金Fe80Si9B11為目標(biāo),通過(guò)添加Fe、Si和B等廉價(jià)元素調(diào)整合金成分,利用熔體快淬法制備出非晶帶材Fe_(75.1)Si_(8.9)Cu_(0.03)Mo_(0.01)Mn_(0.47)B_(10.87)C_(0.11)P_(0.12)Ni_(1.23)Cr_(3.05)Co_(0.11)(at%,標(biāo)注為S1),采用XRD、DSC、VSM、直流B-H磁滯回線測(cè)量?jī)x和阻抗分析儀等分別測(cè)試了非晶帶材的微觀結(jié)構(gòu)、熱穩(wěn)定性和磁性能(Bs、μe和Hc)等。結(jié)果表明:非晶帶材S1的Bs=1.45 T、μe=22846.96(f=1 kHz時(shí))和Hc=1.033 A/m。(2)考察了主組元Ni、Cr和Co元素對(duì)非晶合金Fe_(75.1)Si_(8.9)Cu_(0.03)Mo_(0.01)Mn_(0.47)B_(10.87)C_(0.11)P_(0.12)Ni_(1.23)Cr_(3.05)Co_(0.11)(at%,標(biāo)注為S1)的微觀結(jié)構(gòu)、非晶形成能力、熱穩(wěn)定性和磁性能的影響,同時(shí)開(kāi)發(fā)出兩種新型非晶合金。通過(guò)單獨(dú)或組合添加Ni、Cr和Co元素調(diào)整成分,設(shè)計(jì)出七種新型合金成分,通過(guò)熔體快淬法制備出了七種表觀質(zhì)量良好的合金帶材。其中包含兩種軟磁性能優(yōu)異的非晶合金Fe_(78.55)Si_(9.31)Cu_(0.02)Mo_(0.01)Mn_(0.49)B_(11.37)C_(0.12)P_(0.13)(at%,標(biāo)注為E1)和Fe_(78.46)Si_(9.3)Cu_(0.02)Mo_(0.01)Mn_(0.49)B_(11.36)C_(0.12)P_(0.13)Co_(0.11)(at%,標(biāo)注為E4),其余合金帶材(分別標(biāo)注為E2、E3、E5、E6和E7)均有不同程度的晶化。結(jié)果表明:單獨(dú)或組合添加Ni、Cr和Co不僅影響合金的非晶形成能,也不同程度地影響非晶合金的μe和Bs。其中,E1的Bs=1.62 T、μe=6403.59(f=1 kHz時(shí))和Hc=0.053 A/m。E4的Bs=1.67T、μe=8351.66(f=1 kHz時(shí))和Hc=0.04 A/m。(3)以性能優(yōu)異的Fe_(78.46)Si_(9.3)Cu_(0.02)Mo_(0.01)Mn_(0.49)B_(11.36)C_(0.12)P_(0.13)Co_(0.11)(at%,標(biāo)注為E4)為原材料制備非晶粉末,然后開(kāi)發(fā)出新型磁粉芯。在(2)的研究成果基礎(chǔ)上,E4非晶帶材經(jīng)真空去應(yīng)力退火脆化處理之后,采用機(jī)械球磨法,在大氣下制備出完全非晶態(tài)的磁性粉末。非晶粉末經(jīng)過(guò)鈍化、絕緣包覆、粘結(jié)固化、冷壓成型和去應(yīng)力退火等過(guò)程制備出非晶磁粉芯。結(jié)果表明:非晶磁粉芯的μe達(dá)到12.7(f=1 kHz時(shí)),Bs達(dá)到1.0 T以上,直流偏置特性優(yōu)異,在f=100 kHz,外加直流偏置場(chǎng)強(qiáng)度達(dá)到120 Oe時(shí),μe仍達(dá)到90%以上,并且能夠在10 MHz甚至更寬頻率范圍內(nèi)保持穩(wěn)定。本論文的創(chuàng)新之處在于首次采用中合金鋼開(kāi)發(fā)出具有良好軟磁性能的非晶合金,而且在大氣條件下可以制備出完全非晶態(tài)的軟磁粉末,具有重要的現(xiàn)實(shí)意義。
[Abstract]:Fe based amorphous soft magnetic materials have excellent comprehensive soft magnetic properties, such as high saturation magnetic induction strength (Bs), high permeability (E) and low coercive force (Hc). It is a new magnetic material with promising application. At present, under the background of overcapacity in domestic and accelerating the development of new materials, this paper aims at the development of the composition characteristics of the medium alloy steel. A new type of Fe base amorphous soft magnetic alloy was produced, and the influence of three typical alloy elements of Ni, Cr and Co on the soft magnetic properties of amorphous alloys was investigated. On this basis, the amorphous powders with excellent soft magnetic properties were selected as amorphous powders, and the preparation of new amorphous magnetic powder core was explored in order to broaden its application. The main research works are as follows: (1) new amorphous alloys are developed with alloy steel and their soft magnetic properties are studied. On the basis of Fe_ (92.27) (1.43) C_ (0.14) Mn_ (0.58) P_ (0.15) Cu_ (0.03) Mo_ (0.01) Ni_ (1.51) Cr_ (3.75) Co_ (3.75) Co_ (3.75) Co_ (at%, S0), alloy steel is widely used as an iron base amorphous alloy Fe80S. I9B11 was used to adjust the alloy composition by adding Fe, Si and B, and the melt fast quenching method was used to prepare amorphous ribbon Fe_ (75.1) Si_ (8.9) Cu_ (0.03) Mo_ (0.01) Mn_ (0.47) B_ (10.87) C_ (0.11) P_ (3.05) 0.11 (3.05)). The microstructure, thermal stability and magnetic properties (Bs, e and Hc) of amorphous ribbons were not tested. The results showed that the Bs=1.45 T, e=22846.96 (f=1 kHz) and Hc=1.033 A/m. (2) of amorphous ribbons investigated the principal component Ni, and the elements to amorphous alloys (75.1) (0.03) (0.01), 10.87 (0.11) (0.12) (1.23) (1.23) The microstructure of Co_ (0.11) (0.11) (at%, labeled as S1), the effect of amorphous formation, thermal stability and magnetic properties, and the development of two new amorphous alloys. By adding Ni, Cr and Co elements in a separate or combined combination, seven kinds of new alloy components are designed, and seven kinds of alloy strip with good apparent quality have been prepared through melt quenching. Two kinds of amorphous alloys with excellent soft magnetic properties Fe_ (78.55) Si_ (9.31) Cu_ (0.02) Mo_ (0.01) Mn_ (0.49) B_ (11.37) C_ (0.12) P_ (0.13) (at%, 78.46) and Fe_ (9.3) Si_ (0.02) The results show that the addition of Ni, Cr and Co not only affect the amorphous formation energy of the alloy, but also affect the E and Bs. of the amorphous alloy to varying degrees, E1 Bs=1.62 T, f=1 kHz, and Hc=0.053 (78.46) (9.3). Cu_ (0.02) Mo_ (0.02) (0.01) (0.01) Mn_ (0.49) B_ (11.36) C_ (0.12) P_ (0.13) Co_ (0.11) (at%, as E4) was prepared for amorphous powder and developed a new magnetic powder core. On the basis of the research results of (2), E4 amorphous ribbons were treated by vacuum stress annealing embrittlement, and a completely amorphous magnetic powder was prepared by mechanical ball milling under the atmosphere. The amorphous powder core was prepared by passivation, insulation coating, bonding curing, cold pressing and stress annealing. The results showed that the micron core of the amorphous powder core was 12.7 (f=1 kHz), Bs reached 1 T, and the DC bias was excellent. When the intensity of the external DC bias field reached 120 Oe, the micron was still more than 90%. And it can be stable at 10 MHz or even wider frequency range. The innovation of this paper is that it is the first time to develop amorphous alloys with good soft magnetic properties by using medium alloy steel for the first time, and it is of great practical significance to produce completely amorphous soft magnetic powders in the atmosphere.

【學(xué)位授予單位】：鄭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG139.8

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