Hafnium carbide is usually carbon deficient and therefore its composition is often expressed as HfCx (x = 0.5 to 1.0).
hˈæfniəm kˈɑːɹbaɪd ɪz jˈuːʒuːəli kˈɑːɹbən dᵻfˈɪʃənt ænd ðˈɛɹfoːɹ ɪts kˌɑːmpəzˈɪʃən ɪz ˈɔfən ɛkspɹˈɛst æz ˌeɪtʃˈɛf sˌiːˈɛks ˈɛks ˈiːkwəlz zˈiəɹoʊ.fˈaɪv tə wˈʌn.zˈiəɹoʊ.