Nhanganyaya ye pretreatment ye nickel foam

Nickel foamchinhu chinoshandiswa kugadzira bhatiri maelectrodes, uye maitiro ekugadzira akajairwa nickel foam zvinhu ndeaya anotevera: iyo polyurethane siponji inotanga conductivized, ipapo electrodeposited, uye pakupedzisira sintered.

Mumatanho ari pamusoro apa, iyo conductive kurapwa inowanzobatanidzamakemikari kuputira, coating conductive adhesive, uye vacuum platingmunzira nhatu; iyo electrodeposition inogona kuva sulfate kana sulfamate nickel plating; iyo iripo sintering process inotanga kupedzwa nemhepo inopisa kubva pa polyurethane sponge, uyezve kuderedza uye kunyudza siponji pasi pe hydrogen inoderedza mamiriro ekunze mumatanho maviri, umo mhepo inopisa kubva papolyurethane sponge inoiswa oxid uye decarbonized patembiricha ye300 kusvika 700. °C. Iyo sintering process inopedzwa nemhepo inopisa kubva pa polyurethane sponge, uyezve kuderedza uye kunyudza iyo polyurethane sponge mune hydrogen inoderedza mamiriro; Mushonga wekuderedza unoitwa pasi pe hydrogen reduction atmosphere pa tembiricha ye800 kusvika 1000 ° C kwemaminitsi 30-60, uye mhepo yekudzikisa iammonia decomposition gas, uye huwandu hwekuora gasi rinopedzwa 0.8-1.2 L/g (giramu rega rega. ye nickel inoda 0.8-1.2 malita eammonia yekuora gasi kuti ipedze kudyiwa)

Yakavandudzwa nzira yekugadziranickel foam, nhanho yacho inosanganisira conductivization, electrodeposition uye sintering ye polyurethane sponge, inoratidzwa mune iyo yakati sintering nhanho ndeye pyrolyze uye sinter iyo polyurethane furo zvakananga mumhepo inoderedza mushure me electrodeposition, umo mhepo inoderedza i ammonia decomposition gasi, kudzikisira tembiricha. iri 400-1000 ° C., nguva yekuderedza i30-60 maminitsi, uye huwandu hwe decomposition gasi kushandiswa ndeye 0.4-0.8 L/g. (Giremu rega rega renickel rinoda kushandisa 0.4-0.8 litres yeammonia decomposition gas.) Iyo ammonia yekuora gasi musanganiswa wenitrogen nehydrogen, uye huwandu hwehuwandu hwenitrogen nehydrogen i1:3.

The reaction mechanism ndeyekuti mushure me electrodeposition yenickel foamine polyurethane chipanji chakananga mu hydrogen reduction atmosphere pyrolysis sintering, apo carbon and hydrogen action, generation CH4, C2H6 and other gaseous hydrocarbons, iri pamusoro apa gasification process inokwana kubvisa graphite C mu porous body cleaner.

Iyo inogadzirisa zvinogadzirisa zvikanganiso zviripo mune iripo tekinoroji ye nickel foam mune sintering process, senge nyore kutsemuka, deformation arching, goho rakaderera, kushandiswa kwesimba kwakanyanya, nickel foam mechanical zvivakwa hazvina kugadzikana.